Adding and Subtracting with Exponents
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- Опубликовано: 21 янв 2018
- Hey guys! Welcome to this video on adding and subtracting with exponents. To start off, just so that we are all on the same page, I’m going to define exponents as well as a few other things so that moving forward, hopefully, there won’t be as much confusion.
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all I can think of while watching this video is: "how is she so good at writing backwards?!"
me
She isn’t
Edit: I dont think
The video flipped
@@Regular_guy YEP they mirrored the vid
@@ruenvedder5921 smart
This is incredible. Very smartly shot and easy to follow!
Thanks! We are glad you found it helpful. Be sure to check out our other study materials for specific exams at www.mometrix.com.
Thank you! This was taught in my class, however, it appeared to be quite confusing. This video really helped me understand the concept better and now I know how to add exponents. Thanks again!
You're welcome! We also have great study materials for specific exams on our website at www.mometrix.com.
Thanks! I needed a refresher on how to do this, even as a highschool student! ^^
praise you for helping me with maths as I am in grade 13
How do I know what videos are for what test? I'm taking the OAE Elementary Education subtests?
This helped me by not that much I understand about that conifefenrail thing now, but I still do not know about the x. When I saw your equation at about 3 minutes in I saw you got (2-1) and got confused and thought the x was a 1. And I am still confused. But now I know more about exponents and bases. Thank you
Thank you this has helped me a lot! I subscribed!
is there any video out there explaining how to do this if there is no base variable, and it’s just the coefficient raised with an exponent?
We offer thousands of free videos on our Mometrix Academy website at www.mometrix.com/academy. You can search by either test name or topic. We also have great study materials for specific exams at www.mometrix.com.
But ma'm what to do if it is in fraction ??
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very easy, to the point and crisp
Thxs I've been looking for a video like this for a long time
You are welcome. We also have great study materials on our website at www.mometrix.com.
Thanks 😊 🙏 that helped with my homework
I've been collecting terms without actually thinking about adding and subtracting powers lol!!! Good to have it spelled out so to speak. Any time powers are taught the focus seems to be on handling the exponent when terms are multiplied or divided. Well that's my excuse! Thanks.
I needed this!
This video helped me!! Thanks
Can't we add or subtract exponents with different raised terms? Is there a way for that
Thank you Teacher, I appreciated :)
Great helpful session for maths
Kind of similar to algebra. Thanks for such a nice video 📷
This helped me so much! ❤️❤️❤️❤️
That's great! Don't forget to take a look at our website as well at www.mometrix.com!
This helped me w summer school. Thank u so so much
That's great. We are glad you enjoyed it.
hey your teaching is very good keep it up love from India
Thank you so so much
How do you subtract 2 numbers with the power of n
Thank u so much
This video make me very clear about this concept. Thanks a lot.
We are so glad it was helpful! Be sure to check out our website at www.mometrix.com when you need study materials for a standardized exam!
Thank you!
You're welcome. Be sure to check out our website as well at www.mometrix.com.
Thank you im a grade 8 learner and it helped me alot thanks you
thanks!
thank you so much huge help
You're welcome! We are glad to help.
Did you flip the image? Or are you writing backwards
A magician never reveals their secrets 🤐
Thank You
Wow that video was so helpful
Thanks❤️
You're welcome. We also have great study materials for specific exams on our website at www.mometrix.com.
Wow this will help
Thank you
You're welcome. We also have great study materials on our website at www.mometrix.com.
How did you get (2-1)
The coefficient of the 2nd x^2 in the equation is 1. x^2 is the same as 1x^2. Hope this helps. Don't forget to check out our website at www.mometrix.com when you need study materials for a specific exam!
Thanks from India😎
What if there are no variables just a coefficient raised to an exponent
Great question! If the numbers (or coefficients without variables) are the same and they are being multiplied, then you can add their exponents together. For example: ( 8^3 x 8^7 ) = 8^10. However, let's say you have this problem: ( 9x^3 + 7y^2 + 5^6 2x^3 +5^4 ). Now, in this case 5^6 and 5^4 are being added together, so we can't use our exponent rule. However, we would still add them together, because they are like terms. They are both non-variable numbers. So, here is our answer: ( (9 + 2)x^3 + 7y^2 + (5^6 +5^4) = 11x^3 + 7y^2 + 16250.
Now, let's look at one last thing. Let's say we have 2^6 + 2^6. This is the same thing as 2(2^6). So, we technically can use our exponent rule here. So we have 2^1 x 2^6 = 2^7 = 128 . But, let's say we had 5^4 + 5^4. This is the same thing as 2(5^4). However, our base number (or non-variable coefficients) are not the same, so we could not add their exponents.
I hope this helps!
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@@MometrixAcademy Hi thanks so much I had the same problem.
Thanks
You are welcome! Be sure to check out our website as well at www.mometrix.com.
Wait, What about 2- 1 on the final problem? Shouldn't that be added in the answer?
(2-1)x^2 equals 1x^2. You don't normally list the 1, so it is just x^2. Hope this helps. Don't forget we also have great study materials for specific exams on our website at www.mometrix.com.
im confused. if you have b^3 + b^3... is it going to be b^3?
No, the answer would be 2b^3. b^3 is actually 1b^3. Hope this helps. We also have great study materials for specific exams on our website at www.mometrix.com!
so basicaly 2 to the power of 3 + 3 to the power of 3 will be 5 to the power of 3?
No, in your example, the base numbers are 2 and 3. They are not the same. If you had 2x^3 + 3x^3, the answer would be 5x^3, however, since x is the base and it is the same in both numbers. Hope this helps! Be sure to check out our website when you need study materials for a specific standardized exam. It's www.mometrix.com!
Thank you mam
Where are you from mam
I'm confused, how do I subtract?
Just keep watching till the concepts make sense to you. You can search our entire library of free videos at www.mometrix.com/academy.
great
Really nice from India
Hi
Love from india ❤️
What if the exponents are different
matildamichaels you can
cant
Good, good.
she writes backwards really well
Thank for the video I love you ❤️😘
We are glad you enjoyed the video. We also have great study materials on our website at www.mometrix.com.
Snap?
What if the exponents are different? I understand your explanation but how about exponents that are different?😮
If the exponents are different, you can't simplify the expression any more. If you'd like more help with exponents, search all our free videos by topic or test name at www.mometrix.com/academy!
I see what you did there..
Great, we hope the video was helpful! Don't forget to check out our website at www.mometrix.com when you need study materials for a specific exam!
Is she writing backwards? Impressed.
The video is laterally inverted
@@5TimesWCC *literally
Yeah idk why i did that
@@PasscodeAdvance No.
i think this is wrong
if we take 2square + 3square then according to them it is 5square but if we solve it, we get 13
In your example, you are correct 2^2 + 3^2 = 4 + 9 = 13 because you do exponents before addition. The video examples have coefficients and bases. For example 2x^2 + 3x^2 = 5x^2. This is adding the coefficients together. Not the bases. Hope this helps. Be sure to check out our website at www.mometrix.com.
my gosh nice writing backwords
They flipped the video
How 7 became 5?? everything makes sense but the 7 that became 5 don't make sense and why you moving bases back and forward.. thats not what my teacher told me.
I'm sorry but I see no place in the video where a 7 becomes a 5. Can you let me know what time in the video you are referring to?
I'm sorry.. I think I know what you did.. =) instead of going from 4 to 7.. you replaced a 4 with 7 and did a 7-4.. now it makes sense.. I didn't know that we can do that this way... I had a hard time finding whats going on=) and you didn't explained that one part.. but I like you/your work is awesome,@@MometrixAcademy. Hope to see more videos from you and I'm subscribing to you, my friend.
Ok great. Don't forget to check out our website at www.mometrix.com whenever you need study materials for a specific standardized exam! @@artgallery7376
You're awesome, thank you so much, my intelligent friend. Will do.. stay blessed and do your thing.. I'm with you.@@MometrixAcademy
Mhmmm would we enter logarithms if your last examples asked use to find the value....like I mean (your last example)= 6x^5
Hi Ryo, that's a good question. Typically one does not have to use logarithms until you start getting numbers set to the power of an unknown... so, if I rewrote your example 6x^5 (which does not need a log to be solved) as 6^5x THEN, I'd need to bring that unknown out of the superscripted position to solve for it. That's typically when I would look to logarithms to help me solve for the x. Does that make sense?
Mometrix Academy ohh yes it did..... Thax yo
My brain is confused. The backwards writing makes me buggy
how does she write backwards?!?!?!🤔
All I wanna know is what 10^5 - 10^4 = ....
Sorry we don't do individual tutoring, but we have thousands of other free videos at www.mometrix.com/academy. You can search by topic or test name.
math is hard ngl...
This is no help for me
Don't give up. Just keep watching till the concepts make sense. We have lots of other free videos on our site at www.mometrix.com/academy.
lost me at the last sum
Thanks mam