Question

Tìm x, biết:

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

Answer 1

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

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

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

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

\(\left(x+\frac{1}{5}\right)=\frac{3}{5}\)

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

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

Answer 2

(x+1/5) . (x+1/5)=26/25-17/25

x+1/5 .x+1/5=9/25

x+1/5.x=9/25-5/25

x+1/5 . x=4/25

x.(1/5+1)=4/25

x. 6/5=4/25

x=4/25:6/5

x=2/15