Question

Alright, im lost. How did they get from the red box to the green box here:

Answer 1

did u try expanding the brackets in the nominator?

Answer 2

only the top part of the fraction changed

\[x^{2}-(x+h)^{2}\]
\[x^{2}-(x^{2}+2xh+h^{2})\]
\[x^{2}-x^{2}-2xh-h^{2}\]
\[-2xh-h^{2}\]
\[-h(2x+h)\]

Answer 3

yeh thats what i mean ^^
:)

Answer 4

like i said earlier, i am way too tired, i know thats the way to expand it, but nooo i for some reason put -(x+h)(x+h). thanks again!

Answer 5

:D:D