Question

simplify:
(x2-4)/(2-x)

Answer 1

need help again

Answer 2

[ (x+2)(x-2) ] / (2-x)
the top is the same as -[ (-2-x)(2-x) ] so the bottom 2-x cancels out and you're left with -(-2-x) which is just 2+x

Answer 3

(x+2)(x-2)=x^2-4

{(x+2)(x-2)}/(2-x)

but 2-x=-1(x-2)

so we have

{(x+2)(x-2)}/(-1(x-2))

x-2 cancels

(x+2)/(-1)

-1(x+2)

-(x+2)

Answer 4

so the answer is -(x+2) ?

Answer 5

yes the answer is -x-2 or -(x+2)

Answer 6

ivo you can canceled -2-x with 2-x
these are different

Answer 7

cant't *

Answer 8

oh, i see.. k good to know. thanks.