Question 694757
{{{3x^2+2x=16}}} add -16 to both sides
3x^2+2x-16=0 reverse foil
(3x+8)(x-2) set both =0 and solve 
3x+8=0
3x=-8
x=-8/3
and
x-2=0
x=2
you can put both into the equation and they check out fine, answer is
{-8/3, 2}