Question

[Phạm Tuệ Minh]

x-1/2 mũ 3 =5/6 mũ 2

cảm ơn các bạn đã trả lời câu hỏi

Answer 1

[nameless]

\(x-\left(\frac{1}{2}\right)^3=\left(\frac{5}{6}\right)^2\)
        \(x-\frac{1}{8}=\frac{25}{36}\)
                    \(x=\frac{25}{36}+\frac{1}{8}\)
                    \(x=\frac{59}{72}\)
Vậy \(x=\frac{59}{72}\)

Answer 2

[Nguyễn Vũ Minh Hiếu]

\(x-\left(\frac{1}{2}\right)^3=\left(\frac{5}{6}\right)^2\)

\(\Rightarrow\orbr{\begin{cases}x-\left(\frac{1}{2}\right)^3=\frac{5}{6}\\x-\left(\frac{1}{2}\right)^3=\frac{-5}{6}\end{cases}\Rightarrow\orbr{\begin{cases}x-\frac{1}{8}=\frac{5}{6}\\x-\frac{1}{8}=\frac{-5}{6}\end{cases}\Rightarrow}\orbr{\begin{cases}x=\frac{23}{24}\\x=\frac{-17}{24}\end{cases}}}\)

Vậy ................