Question

Решите уравнение.
(x-1)(x+1)-x(x-2)=0

Answer 1

${x}^{2} + x - x - 1 - {x}^{2} + 2x = 0 \ 2x - 1 = 0 \ 2x = 1 \ x = 0.5$

Answer 2

$(x-1)*(x+1)-x*(x-2)=0 \x ^{2}-1-x ^{2}+2x=0 \-1+2x=0 \2x=1:2 \x= frac{1}{2}=0.5$