Question

E = (x+1) (x+2) + (x+2) (x+3) – 2(x-5) (x-2) - x

Answer 1

Respuesta:

21x−12

Explicación paso a paso:

Vamos a simplificar paso a paso.

(x+1)(x+2)+(x+2)(x+3)−2(x−5)(x−2)−x

Distribuyes aquí amigo:

=(x)(x)+(x)(2)+(1)(x)+(1)(2)+(x)(x)+(x)(3)+(2)(x)+(2)(3)+−2x2+14x+−20+−x

=x2+2x+x+2+x2+3x+2x+6+−2x2+14x+−20+−x

Combinar términos comunes:

=x2+2x+x+2+x2+3x+2x+6+−2x2+14x+−20+−x

=(x2+x2+−2x2)+(2x+x+3x+2x+14x+−x)+(2+6+−20)

=21x+−12

solución:

=21x−12