Question

O valor da Expressão:(-5)²-4²+(1/5)^0 / 3^(-2)+1A)-4B) 1/9C) 1D) 5/4E)9

Answer 1

$\dfrac{(-5)^2-4^2+(1/5)^0} {3^{-2}+1}$

$\dfrac{25-16+1}{1/3^2+1}$

$\dfrac{10}{1/9+1}$

$\dfrac{10}{\dfrac{1+9}{9}}$

$\dfrac{10}{\dfrac{10}{9}}$

$10×\dfrac{9}{10}$

$\dfrac{90}{10}$

$9$

Resposta alternativa "e"

Espero ter ajudado ;)