Question

Solve the quadratic equation below.3x^2-9=0

Answer 1

`\begin{gathered} 3x^2-9=0 \\ 3x^2-9+9=0+9 \\ 3x^2=9 \\ (3x^2)/(3)=(9)/(3) \\ x^2=3 \\ x=√(3),\: x=-√(3) \end{gathered}`