Question

(x+3)(x-3)=x(-x+2)-9

Answer 1

Explicación paso a paso:

x2 - 9 = -x2 + 2x - 9

x2 + x2 - 2x - 9 + 9 = 0

2x2 (al cuadrado) - 2x = 0

2x (x - 1) = 0

x - 1 = 0

x = 1