Question

Efectuar: (2x+5) (2x-3)

Answer 1

Respuesta:

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

$\left(2x+5\right)\left(2x-3\right)=2x\cdot \:2x+2x\left(-3\right)+5\cdot \:2x+5\left(-3\right)$

$=2x\cdot \:2x+2x\left(-3\right)+5\cdot \:2x+5\left(-3\right)$

$=4x^2+4x-15$