Question

Simplify:

Answer 1

\[\frac{ x^2 - 16 }{ x^2 - 8x + 16 }\]

Answer 2

I have a feeling the 16s cancel out

Answer 3

hint :
x^2 - 16 = (x+4)(x-4)
x^2 - 8x + 16 = (x-4)(x-4)

now, which parts u can cancel it ?

Answer 4

(x - 4) cancels out (x-4)?

Answer 5

yes, so what your answer then

Answer 6

it would be:
x + 4
-----
x - 4
correct?

Answer 7

correct,
btw, do u understand how to factor out that ?

Answer 8

I know how to factor out, but not algebraic ratios.

Answer 9

ok, cool :)