Answer
$=4x+3-\frac{10}{3x}$
Work Step by Step
$(12x^4+9x^3-10x^2) \div 3x^3$
$=\frac{12x^4}{3x^3}+\frac{9x^3}{3x^3}-\frac{10x^2}{3x^3}$
$=4x+3-\frac{10}{3x}$
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