as someone who has a few learning disabilities I found this very helpful it's my first time doing homeschool math and it's been easier for me overall but harder for me to get the concept and it stick the teacher wasn't completely clear with my program so I found this video, not expecting much as the videos I have looked up in the past from other content creators, but I found this channel very helpful it especially enjoy how you do a review incase people don't remember previous methods so thank you.
Glad to see this video on finding LCDs for rational expressions. Well done. I am from the 60s, so the haircut I give you is a Beatle Mania over the collar and wide sideburns and 4 stars. Cannot forget the smiley face.
You're factoring out the GCF, which you should already know how to do by the time that you are at these problems. If you can't do that then you need to go back and practice your factoring skills.
Thank You Mr. Math Class Teacher ! Thank you ,thank you ,thank you ! Though in school I can practice more and study from the great notes that you present in your videos. With more practice I know I can learn this math rules and steps to a learning and a better future.I can't express Thank You enough. I will always remember those that taught me on my journey .
7:25 where did the power symbol go? How do you know how to factor these numbers? Why put the “x” first and use brackets? I was following along until this.
He factored out the "x" that was included in both terms. He has some videos on factoring that may be helpful. These rational expressions are taught after students have learned factoring.
Upper part of the fraction: 3x times 4 + 1 times x(2x+1) and and then this sum divided by 1st and 2nd denominator multiplied together. Next...[12x + x(2x+1)] / 3x[x(2x+1)]...
3/10 + 1/15 = Haha. I can't help but see it as: 4.5/15 + 1/15 = 5.5/15 (×2 to rationalize it) (bc 5 is half of 10 and 5 +10 is 15 (then half of 3 plus 3 is 4.5)). This is my fastest method
A couple of things: If the numbers were different, such as 7 and 9 in the denominators, it would be challenging to pull that method off. Fractions are conventionally expressed with integers in the numerator and denominator. I understand that this is the reason you multiplied both by 2. However, that process is not referred to as rationalizing.
@@cbesthelper404 I don't know what I did. bc I did it 9 months ago, and I don't remember this thing-a-ma-what's-it. (fraction, problem, question, equation, etc). I'll try and do it again, (I'm lazy and'll have to watch the vid again), then I'll try to put your numbers (7 and 9) in and do it my way, bc I DO trust that it'll work. (no offense intended.. including: "rationalize" is an English word not a math term, I realize it is not the process name as I did when I used it. I suppose, however, you are informing others who read my comment)
It’s not? Minus the intro the first example took 7min. Considering most needed help with the small nuances it’s not that long. Think you’re more concerned with just typing something I suppose.
@@Questioneverythingx" I'm more concerned about writing something " is an idiotic statement. Clearly we differ in our definition of what is long in this clip, but others made similar comments as well. This clip includes an introduction that contributed to its length so don't disregard it.
@@davepersaud5424 …just skip the intro. Besides that, it’s a free quality lesson so…? Imagine trying to call out the guy who made this free video for you and then saying something is idiotic 🙄 By the way, the only reason a video would purposely be made longer than it has to be (10 minutes or more) is for more ad revenue. Which unless you’re pulling huge viewing numbers it wouldn’t be worth pissing people off. Christ.
You appear to be obsessed with finding a LCD, it is not necessary and will confuse most students. Why not just use what you incorrectly called in one of your videos about adding factions using a 'hack/trick' ? Much quicker, less thought involved?
@@davidaktun look at his video list and it is there. But all you do is multiply the denominators and cross multiply the numerators. So 1/3 + 2/5 becomes 1x5 + 3x2 all over 15 then do the top sum to give 11/15.
tricks or "hacks" don't apply to every problem and don't teach the core of what is going on in a problem. You are supposed to master these fundamentals before using tricks to make problems easier, otherwise students won't be able to progress into more advanced math.
as someone who has a few learning disabilities I found this very helpful it's my first time doing homeschool math and it's been easier for me overall but harder for me to get the concept and it stick the teacher wasn't completely clear with my program so I found this video, not expecting much as the videos I have looked up in the past from other content creators, but I found this channel very helpful it especially enjoy how you do a review incase people don't remember previous methods so thank you.
You spend vastly too much time on your introduction...
And I skip everytime!
Too long for introduction.
But I watched it to the end, and I learned a lot. Thank you.
THANK YOU !!
Glad to see this video on finding LCDs for rational expressions. Well done. I am from the 60s, so the haircut I give you is a Beatle Mania over the collar and wide sideburns and 4 stars. Cannot forget the smiley face.
Great video! I've been struggling with rational expressions for some time now. It's exhausting to me.
MR. TabletClass Math, this is fantastic video on finding the Least Common Denominator in basic mathematics.
unbelievable how much ive forgotten math seeing all these little rules so vital.
15:04 - So if you saw an LCD written long hand (x+3)(x+3)(x+3)(x-3) you'd think 'either it's incorrect or likely one denominator is (x+3)³' ?
9:44
where is the rule covered that 2x^2 + x = x(2x + 1) ?
You're factoring out the GCF, which you should already know how to do by the time that you are at these problems. If you can't do that then you need to go back and practice your factoring skills.
Thank You Mr. Math Class Teacher ! Thank you ,thank you ,thank you ! Though in school I can practice more and study from the great notes that you present in your videos. With more practice I know I can learn this math rules and steps to a learning and a better future.I can't express Thank You enough. I will always remember those that taught me on my journey .
. צריך קצת קניות
7:25 where did the power symbol go? How do you know how to factor these numbers? Why put the “x” first and use brackets? I was following along until this.
He factored out the "x" that was included in both terms. He has some videos on factoring that may be helpful. These rational expressions are taught after students have learned factoring.
Watching these videos makes me realize just how bad my math teachers at school were at teaching maths!
Upper part of the fraction: 3x times 4 + 1 times x(2x+1) and and then this sum divided by 1st and 2nd denominator multiplied together. Next...[12x + x(2x+1)] / 3x[x(2x+1)]...
so you cross multiply and simplify x in this case is the redundant multiplier
video begins at 5:20
sorry it begins at 6:16
Ist das hier ein Laberkurs oder ein Marhe- Kurs ?
Thank you.
even if you didn't get any of the problems solved, show the instructor that you were up till 3 or 4:30 a.m. racking our brains.👁
I wish u were my teacher
(X+3)(X-3)
my hero 😭
we can always start a the # 2
3x(2x+1)
3/10 + 1/15 =
Haha. I can't help but see it as:
4.5/15 + 1/15 = 5.5/15 (×2 to rationalize it)
(bc 5 is half of 10 and 5 +10 is 15 (then half of 3 plus 3 is 4.5)).
This is my fastest method
A couple of things: If the numbers were different, such as 7 and 9 in the denominators, it would be challenging to pull that method off.
Fractions are conventionally expressed with integers in the numerator and denominator. I understand that this is the reason you multiplied both by 2. However, that process is not referred to as rationalizing.
@@cbesthelper404 I don't know what I did. bc I did it 9 months ago, and I don't remember this thing-a-ma-what's-it. (fraction, problem, question, equation, etc). I'll try and do it again, (I'm lazy and'll have to watch the vid again), then I'll try to put your numbers (7 and 9) in and do it my way, bc I DO trust that it'll work. (no offense intended.. including: "rationalize" is an English word not a math term, I realize it is not the process name as I did when I used it. I suppose, however, you are informing others who read my comment)
If you are going to apply an LCD, shouldn't you also talk about what you need to do to the numerators? I don't think that I just missed that, did I?
Good, but why does it have to be this long and drawn out. Seems like you're concerned more about the length of your videos.
It’s not? Minus the intro the first example took 7min. Considering most needed help with the small nuances it’s not that long. Think you’re more concerned with just typing something I suppose.
@@Questioneverythingx" I'm more concerned about writing something " is an idiotic statement. Clearly we differ in our definition of what is long in this clip, but others made similar comments as well. This clip includes an introduction that contributed to its length so don't disregard it.
@@davepersaud5424
…just skip the intro. Besides that, it’s a free quality lesson so…? Imagine trying to call out the guy who made this free video for you and then saying something is idiotic 🙄
By the way, the only reason a video would purposely be made longer than it has to be (10 minutes or more) is for more ad revenue. Which unless you’re pulling huge viewing numbers it wouldn’t be worth pissing people off. Christ.
Too much extra comments... please focus on the topic.
Why didn't you finish out the last problem? It's confusing as to what the LCD will then multiply in the denominator. Another thumbs down from me.
too much extra comments... please focus on the topic and set a side other irrelative topics.
You ramble to much!
You love to hear your own voice holy sht get to the point junior...
Wtf is u talking about 😳
My God you talk so much I start losing interest. Just explain it step by step please
Can you imagine the children? So boring
why does it take 6 minutes to actually start talking about question? Just jump into it dude
You appear to be obsessed with finding a LCD, it is not necessary and will confuse most students. Why not just use what you incorrectly called in one of your videos about adding factions using a 'hack/trick' ? Much quicker, less thought involved?
Where can I see that "trick" the "hack trick"?
@@davidaktun look at his video list and it is there. But all you do is multiply the denominators and cross multiply the numerators. So 1/3 + 2/5 becomes 1x5 + 3x2 all over 15 then do the top sum to give 11/15.
tricks or "hacks" don't apply to every problem and don't teach the core of what is going on in a problem. You are supposed to master these fundamentals before using tricks to make problems easier, otherwise students won't be able to progress into more advanced math.
Wtf is u talking about 😖
@@aprilfonseca8654 If you'd ask nicely without being rude I might have told you April.
Obviously not a real teacher.