Question

Por favor respondan : -5a(a+2)-6a(a-3)+3a(a-2)+8a²

Answer 1

$-5a\left(a+2\right)-6a\left(a-3\right)+3a\left(a-2\right)+8a^2$
$\mathrm{Poner\:los\:parentesis\:utilizando}:\quad \:a\left(b+c\right)=ab+ac$
$=-5a^{2}-10a-6a^{2}+18a +3a^{2}-6a+8a^{2}$
$\mathrm{Agrupar\:terminos\:semejantes}:$
$=-5a^2+3a^2+8a^2-6a^2-6a+18a-10a$
$=-5a^2+3a^2+8a^2-6a^2+2a$
$=-11a^{2}+11a^{2}+2a$
$=2a$