Answer
$2x^3-5x^2+20x-80+\frac{308}{x+4}$
Work Step by Step
Use long division as shown in the figure,
we can obtain the quotient and the remainder as:
$\frac{2x^4+3x^3-12}{x+4}=2x^3-5x^2+20x-80+\frac{308}{x+4}$
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