Question

2(x + 1)(x - 7) igual a 0

Answer 1

2(x + 1)(x - 7) = 0

(2x + 2)(x - 7) = 0


2x+2 = 0          x-7 = 0
2x = -2             x = 7
x = -2/3
x = -1

CS = (-1;7)