Question

tìm x

(x+1/5)^2+17/35=26/25

Answer 1

nhầm 17/25

Answer 2

\(\left(x+\frac{1}{5}\right)^2+\frac{17}{25}=\frac{26}{25}\)

\(\left(x+\frac{1}{5}\right)^2=\frac{26}{25}-\frac{17}{25}\)

\(\left(x+\frac{1}{5}\right)^2=\frac{9}{25}=\left(\frac{3}{5}\right)^2=\left(-\frac{3}{5}\right)^2\)

\(\Rightarrow x+\frac{1}{5}=\frac{3}{5}\)                                             \(\Rightarrow x+\frac{1}{5}=-\frac{3}{5}\)

\(x=\frac{3}{5}-\frac{1}{5}\)                                                      \(x=-\frac{3}{5}-\frac{1}{5}\)

\(x=\frac{2}{5}\)                                                                   \(x=\frac{-4}{5}\)

                                       \(vậy...\)