Answer
{$\dfrac{-2}{3},2$}
Work Step by Step
Re-write the given equation as: $3x^2-4x-4=0$
Factorize the expression as: $3x^2-6x+2x-4=0$
This implies that $(3x+2)(x-2)=0$
Need to apply zero-product property.
Thus, $x=\dfrac{-2}{3},2$
Hence, our solution set is: {$\dfrac{-2}{3},2$}