Question

[Nguyễn Gia BảoB]

Thực hiện phép tính sau :

\(\left(\dfrac{2}{5}-\dfrac{1}{2}\right)^2+2\dfrac{1}{5}:\dfrac{-22}{15}\)

Answer 1

[Nguyễn Lê Phước Thịnh]

\(\left(\dfrac{2}{5}-\dfrac{1}{2}\right)^2+2\dfrac{1}{5}:\dfrac{-22}{15}\)

\(=\left(\dfrac{4}{10}-\dfrac{5}{10}\right)^2+\dfrac{11}{5}\cdot\dfrac{-15}{22}\)

\(=\dfrac{1}{100}+\dfrac{-3}{2}=\dfrac{1}{100}-\dfrac{150}{100}=-\dfrac{149}{100}\)

Answer 2

[Nguyễn Gia BảoB]

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