Question

2+(x-1)(x+1)=x(x-2) Solve for x

Answer 1

2+(x-1)(x+1)=x^2-2x
2+(x^2-1)=x^2-2x
2+x^2-1=x^2-2x
x^2+2-1=x^2-2x
x^2+1=x^2-2x
x^2-x^2-2x+1=0
-2x+1=0
x=-1/(-2)=1/2

Answer 2

first just factor it all out
\[2+x ^{2}+2x+1=x ^{2}-2x\]
\[2+1=-4x\]
x=-(3/4)

Answer 3

paul (x-1)(x+1)=x^2-1

Answer 4

sorry my mistake he's right!

Answer 5

okay, so its 1/2?