Question

Really easy!! Simplify the expression!

Answer 1

for some reason i am confused on the bottom half and how they managed to get x-8 on the bottom.

Answer 2

64 =8^2
hence \(64-x^2 = 8^2-x^2=(8+x)(8-x)\)

Answer 3

Okay, is the answer A then?

Answer 4

nup

Answer 5

okay great thank you!

Answer 6

oh, it was wrong! haha

Answer 7

Nope, A is not the correct one.

Answer 8

what was the answer then...i dont know why this question is so confusing for some reason.

Answer 9

You confuse me also. I think you want to study, not just the answer. But it seems I am wrong. hehehe

Answer 10

haha yes i do want to study. i have a hard time with factoring and these questions.

Answer 11

i would like to know how to solve them...im not just looking for the answer.

Answer 12

D.

Answer 13

this question as well. the farthest i can get it 6(x-4). i cant seem to factor the bottom half. what would you do?

Answer 14

thank you Alli! i figured it was.

Answer 15

factor the top 5x-40
5(x-8)
now factor the bottom 64-x^2=-x^2+64=-(x^2-64)=-(x-8)(x+8) like @Loser66 said
this leaves 5(x-8)/-(x-8)(x+8)
now (x-8) cancels out

Answer 16

thank you @acxbox22!! that makes much more sense. so for the picture i just attached, the bottom would be factored into -(x^2+16) and then -(x-4) (x+4)?

Answer 17

yes good job! you can just factor out a negative one and life becomes easier

Answer 18

hahah okay awesome. thank you! i always got stuck i didnt know you could just factor out the negative one.

Answer 19

C for the second one.