Question

(1/25) elevado a X = 125
Elevado no caso seria em cima ( 1 sobre 25 elevado a X

Answer 1

$\left( \dfrac{1}{25} \right)^x=125\\\\ \left( \dfrac{1}{5^2}\right)^x=5^3\\\\ (5^{-2})^x=5^3\\ \not5^{-2x}=\not5^3\\ -2x=3\\\\ x=- \dfrac{3}{2} \\\\\\ \Large\boxed{\text{S}=\left\{- \dfrac{3}{2}\right\} }$