Question

Calcular o resultado de
(x + 2)(x + 6) – (x + 3)(x + 4)

Answer 1

(x + 2)(x + 6) - (x + 3)(x +4)

Aplicando a distributiva:

(x² + 6x + 2x + 12) - (x² + 4x + 3x + 12) =

= (x² + 8x + 12) - (x² + 7x + 12) =

= x² + 8x + 12 - x² - 7x - 12 = x.