Question

efetue
$( + 5 {a}^{2} ) + ( -3 {a}^{2} )$
pra ontem​

Answer 1

Oie, tudo bom?

$= 5a {}^{2} + ( - 3a {}^{2} ) \\ = 5a {}^{2} - 3a {}^{2} \\ = (5 - 3)a {}^{2} \\ \boxed{ = 2a {}^{2} }$

Att. NLE Top Shotta