Question

-3х2+6=0 помогите решить

Answer 1

$-3x^{2}+6=0\\\\x^{2}-2=0\\\\(x-\sqrt{2})(x+\sqrt{2})=0\\\\\left[\begin{array}{ccc}x-\sqrt{2}=0 \\x+\sqrt{2}=0 \end{array}\right\\\\\\\left[\begin{array}{ccc}x_{1}=\sqrt{2}\\x_{2}=-\sqrt{2} \end{array}\right$