Question

Reducir: 2m2 – {–[m2 + 3n – (5 + n) – (–3 + m2 )]} – (2n + 3)

Answer 1

Respuesta:

$=2m^2-5$

Explicación paso a paso:

$2m^2-\left(-\left(m^2+3n-\left(5+n\right)-\left(-3+m^2\right)\right)\right)-\left(2n+3\right)\\=2m^2+m^2+3n-\left(5+n\right)-\left(-3+m^2\right)-\left(2n+3\right)\\=2m^2+m^2+3n-5-n-\left(-3+m^2\right)-\left(2n+3\right)\\=2m^2+m^2+3n-5-n+3-m^2-\left(2n+3\right)\\=2m^2+m^2+3n-5-n+3-m^2-2n-3\\=2m^2+m^2-m^2+3n-n-2n-5+3-3\\=2m^2+3n-n-2n-5+3-3\\=2m^2-5+3-3\\=2m^2-5$