Question

1. (x + 4) (x + 10) =

Answer 1

Aplicar propiedad distributiva: $\left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$a=x,\:b=4,\:c=x,\:d=10$

$=xx+x\cdot \:10+4x+4\cdot \:10$

$=xx+10x+4x+4\cdot \:10$

Simplificar: $xx + 10x + 4x + 4 \cdot 10:\quad x^{2} + 14x + 40$

$=x^2+14x+40$