Question

sendo A=(-2)²+7°e B= (-5)³/(-5)², calcule A+B:

Answer 1

$A=(-2)^2+7^0=4+1=5\\\\ B=\dfrac{(-5)^3}{(-5)^2}=\dfrac{-125}{25}=-3\\\\ A+B=5+(-3)=5-3=2\\\\ \boxed{A+B=2}$

Answer 2

A=(-2)²+7°
+4 +1=5

B= (-5)³/(-5)² 
-125/25 (simplificando 125 e 25  por 25, obteremos -5/1=-5)

 A+B:
5+(-5)
5-5=0