$\frac{4x^2+23x+33}{x+4}$
$\frac{16x^4-18x^3-20-7}{2x-4}$
$2x^3+12x+16$
$\sin\left(3x\right)-3\sin\left(3x\right)=2$
$4k\cdot9k^3$
$a4ab3$
$-55\cdot6$
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