Answer for (C) is 5∛5 in its simplest form. 5x=125x¯¹/² x=25x¯¹/² x ÷x¯¹/²=25 x¹+¹/²=25 x³/²=25; squaring both sides x³=625 ; taking cubic root x= (5*5*5*5)¹/³ x= 5∛5
RHS will be 1/2^3 which gives 2^-3 Then LHS is 2^(5x-1)as you said. So we can equate exponents since bases are equal... So 5x - 1 =-3 5x =-2 and so x=-2/5 or - 0.4 Let me know if that helps 😅 Also checkout my channel for more helpful Math videos
5x + 1 = 625 Subtract 1 from both sides of the equation 5x + 1 (- 1) = 625 - 1 5x = 624 Divide 5 by both sides of the equation to make x subject of the formula 5X ÷ 5 = 624 ÷ 5 X = 124.8
1:17 So what he did here is made the base of each expression the same. This means that we can just get rid of these bases, due to their equivalence, and bring the exponents down as bases.
Answer for (C) is 5∛5 in its simplest form.
5x=125x¯¹/²
x=25x¯¹/²
x ÷x¯¹/²=25
x¹+¹/²=25
x³/²=25; squaring both sides
x³=625 ; taking cubic root
x= (5*5*5*5)¹/³
x= 5∛5
Clear explanation may good lord may bless you
Thanks for helping me to solve my question sir
Thank you so much this video is very helpful
Do clear calculations on question b when cross multiplying ❤ 3:11
Yes
It's not clear
Thanks again so much for your help
Great work sir, help on this question.if A+B+ C=180°, show that, sin2A+sin2B+sin2C=2sin(A+B) cos(A-B)+2sinC cosC.
For a), I took a more complicated approach that involved using logarithms and I also ended up getting x = 5/2 (or x = 2.5).
Thanks so much for your help❤
2^(4x+2)=2^(6x-3)=>6x-3=4x+2=>x=5/2ans
Hw did u even cross multiply those things
also ddnt understand the cross multiplication especially question b😢😢
Same
Same
Am also wondering because cross multiply is failing
Sir please explain more on this one
شكرا
Good well
How can I calculate this:
2 to the power of 5x - 1 = 1/8 to the power of x(x - 1)
RHS will be 1/2^3 which gives 2^-3
Then LHS is 2^(5x-1)as you said. So we can equate exponents since bases are equal... So 5x - 1 =-3
5x =-2 and so x=-2/5 or - 0.4
Let me know if that helps 😅
Also checkout my channel for more helpful Math videos
Thanks for helping me
Any time
explain the 3rd quiz well🙁🙁🙁🙁
Please in question 2whereis the 2
Thonk you ❤❤❤❤❤❤❤❤❤
Sir continue
Sorry please how is 2 raised to the power of 3 8 isn't it meant to be 2 raised to the power of 4
Yes
But I think u made a mistake on part 2 sir while cross multiplying
Please clearify quadratic equations and functions in A level
What about when given 12^3x+1=4^3x+1 and told to find x?
How did you find x -3/2
this mathematics is for engineering mathematics or what
🤣🤣
We don't know
Aaaaa how can you multiply 1/x^4=625 and just make inter changes
Very good question 😅 I am also get confused here
Plz redo questions (b)
Where is three coming from
When a question is giving maybe 5×+1=625, how will you solve it
5x + 1 = 625
Subtract 1 from both sides of the equation
5x + 1 (- 1) = 625 - 1
5x = 624
Divide 5 by both sides of the equation to make x subject of the formula
5X ÷ 5 = 624 ÷ 5
X = 124.8
Why didn't we make the last question have the same base I'm confused
I don't understand letter b sir
I need help
Excuse me sir I have not understood well how the laws of indices have applied in x.x^1/2...please help🙏🙏
Solve this 2 rest to power x minus y equal to 16
Please I need clear explanation on question C
Am new here guys
Good teacher
Yes
🤐🤐🤐
I want you to solve for me (1/3 )-1
❤❤❤❤
All was well until the last part
Too fast bro, clear explanation.
Pls what year is this
Not clear on the last one
Am I the only one who is confused here
Drop them digits
No, and I’m wondering why the numbers are big and the rest are small?
1:17 So what he did here is made the base of each expression the same. This means that we can just get rid of these bases, due to their equivalence, and bring the exponents down as bases.
Which part
Not at all
How did u cross multiply
I do not understand ( c)
Question c is confusing
I didn't understand
Which part...
Give us grade
I don't understand oooooo
Bad teaching
You lost me at (b)👎👎
You need to learn before you can teach better
am not with u ...sir I think you have not cross multiplied well
This guy don't know how to explain 😢
@Obenewaa7 just say that you don't understand what am confused
Give us grade
You need to learn before you can teach better