Asked by Julissa

x^2 = x^2-1 = x^2-1 = (x-1)(x+1) -x = 1
x-1 x-1
Is this right, please help thanks
Answered by Chopsticks
Are you factoring?
Answered by Julissa
Yes, I need to understand why this is right, please help...

Answered by Chopsticks
If you factor x^2-1 = you get (x-1)(x+1)
You can check your answer using FOIL