Question

$\times = -2 ^{2} +3^{2} - 5 ^{2}$
​

Answer 1

Vou resolver as potências por partes ok?

-2^2 » (-2).(-2) = +4
3^2 » 3.3= +9
-5^2 » (-5).(-5) = +25

Sendo:
x= 4 + 9 + 25
x= 38