Question 486714
Solve  for {{{f(x)= 0}}} for {{{x}}}, {{{f(x)= 6x^2-54}}}
{{{6x^2-54=0}}}
{{{6x^2=54}}}
{{{x^2=54/6}}}
{{{x^2=9}}}
{{{x[1]=3}}} {{{x[2]=-3}}}