a, \(x^2=\left(\sqrt{3}\right)^2=3\)
b, \(x^2=\left(\sqrt{8}\right)^2=8\)
a) \(x^2=\left(\sqrt{3}\right)^2=3\)
b) \(x^2=\left(\sqrt{8}\right)^2=8\)
a ) \(x=\sqrt{3}\)
=> \(x^2=\left(\sqrt{3}\right)^2\Rightarrow x^2=3\)
b) \(x=\sqrt{8}\)
=> \(x^2=\left(\sqrt{8}\right)^2\Rightarrow x^2=8\)