Question

Qual e o valor da expressao (x -2)(x+4)quando x= -1?

Answer 1

(x-2) . (x+4)  x = -1

(-1 - 2) . (-1 + 4)
-3 . 3 = -9

Answer 2

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

x = -1

y = (-1 - 2)(-1 + 4)
y = (-3)(3)
y = -9

Resposta: -9