Question

Qual o valor de x?





(x+1)(x-2) - (x-1)(x+4) = (x-1)(x-2)

Answer 1

(X^2-2X+X-2)-(X^2+4X-X-4) = (X^2-2X-X+2) X^2-X^2-X^2-2X+X-3X+2+2-4 = -X^2 -4X=0× (-1) = X^2 +4X =0 = X (X+4) = 0 X=0 X+4 =0 X=-4