Question

Al desarrollar (x + 2) (x + 1), se obtiene:

Answer 1

Solución:

(x + 2)(x + 1) = x(x + 1) + 2(x + 1)

= x(x) + x(1) + 2(x) + 2(1)

= x² + x + 2x + 2

= x² + 3x +2