Question

ayuda. es para hoy falta 10 minutis​

Answer 1

SOLUCION:

$5m^3-9n^3+6m^2n-8mn^2-14mn^2-21m^2n+5m^3-18\\\\\mathrm{Agrupar\:terminos\:semejantes}\\\\=5m^3+5m^3+6m^2n-21m^2n-8mn^2-14mn^2-9n^3-18\\\\\mathrm{Sumar\:elementos\:similares:}\:6m^2n-21m^2n=-15m^2n\\\\=5m^3+5m^3-15m^2n-8mn^2-14mn^2-9n^3-18\\\\\mathrm{Sumar\:elementos\:similares:}\:5m^3+5m^3=10m^3\\\\=10m^3-15m^2n-8mn^2-14mn^2-9n^3-18\\\\\mathrm{Sumar\:elementos\:similares:}\:-8mn^2-14mn^2=-22mn^2\\\\=10m^3-15m^2n-22mn^2-9n^3-18$ ⬅RESPUESTA

Answer 2

Respuesta:

$5m^3-9n^3+6m^2n-8mn^2 -(14mn^2 - 21m^2n+5m^3-18)\\\\5m^3 - 9n^3 + 6m^2n - 8mn^2 - 14mn^2 + 21m^2n - 5m^3 + 18\\\\-9n^3 +27m^2n - 22mn^2 + 18$

Explicación: