Question 960226
Difference of squares (not square roots):
{{{3x^2-192=0}}} Divide each side by 3
{{{x^2-64=0}}}
{{{(x-8)(x+8)=0}}}
{{{x-8=0}}} or {{{x+8=0}}}
{{{x=8}}} or {{{x=-8}}}
ANSWER: x=8 or -8