Question

5 elevado a x mais 2 igual 125

Answer 1

5^x+2=125
5^x+2=5^3
cortando as bases iguais
x+2=3
x=3-2
x=1

Answer 2

$5^{x+2}=125\\\\5^{x+2}=5^3\\\\\begin{matrix}\qquad\therefore\end{matrix}\\\\x+2=3\\\\x=1\\\\\\\boxed{S=\{1\}}$