# Solve the polynomial inequality graphically. 3x^{4}-5x^{3}-12x^{2}+12x+16

Solve the polynomial inequality graphically. $3{x}^{4}-5{x}^{3}-12{x}^{2}+12x+16$
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Step 1
We graph the left-hand side of the inequality and find x-intercepts at $x=-\frac{4}{3},x=-1,x=2$:

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