$\cos^3\left(x\right)=\left(1-\sin^2\left(x\right)\right)\left(\cos\left(x\right)\right)$
$-\frac{44}{4}$
$\frac{3x^3-x^2-22x-24}{x+3}$
$\lim_{x\to0}\left(\frac{4sin\left(5x\right)-3tan\left(x\right)-x}{2x}\right)$
$\left(a^2b^3\right)\left(3a^2x\right)$
$8x^2-46x+63$
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