Question

 

Tìm x Toán lớp 7

Gíup mình với (x-2/3)^2=4/49

 

Answer 1

x=8/21

Answer 2

\(\left(x-\frac{2}{3}\right)^2=\frac{4}{49}\)

\(\Rightarrow x-\frac{2}{3}=\frac{2}{7}\)

\(x=\frac{2}{7}+\frac{2}{3}\)

\(x=\frac{20}{21}\)