Question

Efetue as operações abaixo: a) -2/3 + 5/6
b) (5/3)²

Por favor me ajudem!!!

Answer 1

Resposta:

$a)-\dfrac{2}{3}+\dfrac{5}{6}=\dfrac{(6:3)*(-2)+(6:6)5}{6}=\\\dfrac{(2*(-2))+(1*5)}{6}=\dfrac{-4+5}{6}=\boxed{\dfrac{1}{6}}\\\\\\\\b)(\frac{5}{3})^{2}=\dfrac{5^{2}}{3^{2}}=\boxed{\dfrac{25}{9}}$

Explicação passo-a-passo: