L
lenphiatruoc


\[{a^3} - \sqrt 2 {a^2} - a + 2 - \sqrt 2 = 0\]
\[\left( {9{x^2} - 150x + 625} \right)\left( {{x^2} - 1} \right) = 9{x^2}\]
\[\sqrt {3x - 1} = - 4{x^2} + 13x - 5\]
\[\left( {9{x^2} - 150x + 625} \right)\left( {{x^2} - 1} \right) = 9{x^2}\]
\[\sqrt {3x - 1} = - 4{x^2} + 13x - 5\]