Question

1, (X+1/2)^2=4/25

hELP ME ^^

Answer 1

\(\left(x+\frac{1}{2}\right)^2=\frac{4}{25}\)

\(\left(x+\frac{1}{2}\right)^2=\left(\pm\frac{2}{5}\right)^2\)

\(x+\frac{1}{2}=\pm\frac{2}{5}\)

TH1:

\(x+\frac{1}{2}=\frac{2}{5}\)

\(x=\frac{2}{5}-\frac{1}{2}\)

\(x=\frac{4}{10}-\frac{5}{10}\)

\(x=-\frac{1}{10}\)

TH2:

\(x+\frac{1}{2}=-\frac{2}{5}\)

\(x=-\frac{2}{5}-\frac{1}{2}\)

\(x=-\frac{4}{10}-\frac{5}{10}\)

\(x=-\frac{9}{10}\)

Vậy \(x=-\frac{1}{10}\) hoặc \(x=-\frac{9}{10}\)