Question

Câu 1 : Thực hiện phép tính

a)( \(\frac{-4}{5}\) ) ^3 ( \(\frac{-5}{4}\) ) ^3

b) \(\frac{3}{5}\) + \(\frac{3}{4}\) \(\left(\frac{-4}{5}\right)\)

c) \(\frac{5}{9}\) + ( \(\frac{4}{3}\) - \(\frac{3}{2}\) ) \(-\sqrt{16}\) . \(\frac{1}{9}\)

Chú ý : Dấu (^) này,là dấu mũ nha mb

Giúp mừn vs

Thanks mb nhìu

Answer 1

\(\left[\left(-\frac{4}{5}\right).\left(\frac{-5}{4}\right)\right]^3=1^3=1\)

\(\frac{3}{5}+\frac{3.\left(-4\right)}{4\cdot5}=\frac{3}{5}+\frac{-3}{5}=0\)

\(\frac{5}{9}-\frac{1}{6}-\frac{4}{9}=\frac{5}{9}-\frac{4}{9}-\frac{1}{6}=\frac{1}{9}-\frac{1}{6}=-\frac{1}{18}\)