Question

Simplify

Answer 1

428

414

47

43

Answer 2

Write it out
4 * 4 (DO that 21 times)

Answer 3

252

Answer 4

Or just subtract 7 from 21, then the exponential numbers and the base stays the same

Answer 5

then 4(the exponent) and you'll get your answer

Answer 6

I can't give you the answer, it's against open study rules...

Answer 7

i really need help cause i have been getting the answers and never learned and now my teacher is goiung to be calling and asking questions

Answer 8

please explain

Answer 9

what's 21 - 7?

Answer 10

wait how did u get 21?

Answer 11

Okay, so when you do 4^21 over 4^7
I got 21 because that's the numerator in the monomial

Answer 12

1. Subtract the exponents (21 - 7)
2. The base (4) stays the same
3. 4 (21-7)
So what's 21 - 7?

Answer 13

please need help understanding

Answer 14

I'm just saying but maybe instead of getting answers on the internet ask your teacher for help because cheating never solves anything long term, which you can see now.

Answer 15

im not cheating i want someone to explain to me like give me the walk through so i can aswer the rest by my self

Answer 16

\(\displaystyle \frac{a^n}{a^m}=a^{n-m}\)

Answer 17

can u explain with words?

Answer 18

When you have a fraction with exponents, with like bases, you get the base to the top exponent minus the bottom exponent.

Answer 19

Exponents are shorthand multiplication...so you're basically dividing 1 multiplication problem here by another multiplication problem. 4^21 is the same as saying 4x4x4... up to twenty one times. 4^7 is the same as saying 4x4x... up to seven times. So if you were to literally write that out you would see that the first seven 4's on the top of the equation and all of the 4's on the bottom cancel each other out. 4/4 = 1. So what you're left with is seven 1's on the top of the equation and fourteen (4x)'s. Since anything multiplied by 1 is that number, it's not necessary to keep the ones. so you're left with 4^14 on the top of the division equation and 1 on the bottom, which is exactly the same as saying 4^14

Answer 20

thank you so much @mightBEyourTEACHER you have been a big help :)

Answer 21

Oh, thanks, I didn't help...

Answer 22

for the sake of clarity = change all of the x's in my previous comment to *'s they are operations, not variables

Answer 23

@mightBEyourTEACHER
This is why \(\LaTeX\) is a wonderful thing. I suggest visiting the help area for it to familiarize yourself with it.

Answer 24

please be nice thats one of the first rules in the CoC and Yes @raimj512 you did help alot thank you :)