Giải phương trình: (1/2)3x^2 = 1/256
Giải thích
Ta có: \[\left( {\frac{1}{2}} \right)3{x^2} = \frac{1}{{256}}\]
⇔ x2 = \(\frac{1}{{384}}\)
⇔\[\left[ \begin{array}{l}x = \frac{{\sqrt 6 }}{{48}}\\x = \frac{{ - \sqrt 6 }}{{48}}\end{array} \right.\].
Ta có: \[\left( {\frac{1}{2}} \right)3{x^2} = \frac{1}{{256}}\]
⇔ x2 = \(\frac{1}{{384}}\)
⇔\[\left[ \begin{array}{l}x = \frac{{\sqrt 6 }}{{48}}\\x = \frac{{ - \sqrt 6 }}{{48}}\end{array} \right.\].