Question

(-5)² - 3² + (2/3)º / 3^-2 + 1/5 + 1/2 é igual a:

a) 3150/17
b) 90
c) 1530/73
d) 17/3150
e) -90

Answer 1

$\frac{(-5)^2-3^2+(\frac{2}{3})^0}{3^-^2+\frac{1}{5}+\frac{1}{2}}\\\\\\ \frac{25-9+1}{\frac{1}{9}+\frac{1}{5}+\frac{1}{2}}\\\\\\ \frac{17}{\frac{73}{90}}\\\\\ \boxed{\frac{1530}{73}}$