Question

Solve 6x^2=18

Answer 1

divide both sides by 6
\[\frac{6x^2}{6}=\frac{18}{6}\]
\[x^2=3\]
\[x=\pm \sqrt{3}\]

Answer 2

since 6*3 = 18; id assume at a glance that: x = +-sqrt(3)