Question 254651
We have the following question:
{{{4x^2=18}}}
In this case, you do not have to set = 0.
step 1 - divide both sides by 4 to get
{{{x^2 = 18/4}}} 
step 2 - take sqrt of both sides to get
{{{x = sqrt(18) / 2}}} or {{{x = -sqrt(18) / 2}}}
which simplifies to
{{{x = +3sqrt(2) / 2}}} or {{{x = -3sqrt(2) / 2}}}