Basically they're using:
So I have a Complex Algebra question. I didn't know if i should have put this into the Algebra section or this section as i didn't use complex numbers in Pre-University Math
The picture below has a limit problem that i plugged into WolfRamAlpha and I wanted to know how it got from the original problem to the second step.
It says factor out the numerator and denominator but it seems that their are is a couple steps I am not seeing.
Thanks for the help