Question

[Le Lan Anh]

\(\left(x-\frac{13}{15}\right)^2-\frac{144}{225}=0\)

Answer 1

[Minh Hiền]

\(\Rightarrow\left(x-\frac{13}{15}\right)^2=\frac{144}{225}\)

\(\Rightarrow\left(x-\frac{13}{15}\right)^2=\left(\frac{12}{15}\right)^2=\left(-\frac{12}{15}\right)^2\)

=> \(x-\frac{13}{15}=\frac{12}{15}\) hoặc \(x-\frac{13}{15}=-\frac{12}{15}\)

=> \(x=\frac{25}{15}\)             hoặc \(x=\frac{1}{15}\)

=> \(x=\frac{5}{3}\)               hoặc \(x=\frac{1}{15}\)