Answer
$x=-\frac{4}{3}$ or $x=-1$
Work Step by Step
We solve by factoring:
$3x^{2}+7x+4=0$
$(3x+4)(x+1)=0$
$3x+4=0$ or $x+1=0$
$x=-\frac{4}{3}$ or $x=-1$
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