Question

Simplify x squared minus 16 all over x squared minus 8 times x plus 16.

−1

x plus 4 all over x

2 over x minus 2

x plus 4 all over x minus 4

Answer 1

http://learn.flvs.net/webdav/assessment_images/educator_algebra1_v10/10_01_11.gif

Answer 2

so your equation shows: (x^2)-16 / (x^2) - 8x + 16.
Step 1: factor the top and bottom to get (x+4)(x-4) / (x-4)(x-4)
step 2: the (x-4) in the numerator can cancel with a (x-4) in the denominator.
Therefore you final answer is (x+4) / (x-4) because those both can not cancel with each other. hope this helps