$\sin\left(3b\right)\cos\left(2b\right)+\sin\left(2b\right)\cos\left(3b\right)$
$\left(18x+17y\right)\left(18x-17y\right)$
$\frac{2x^3-2x^2+3x+5}{x+1}$
$f\left(x\right)=\left(\frac{z^3+1}{z^2-1}\right)$
$\int\left(x^{-17}\right)dx$
$8\sqrt{x^4}y^2z^3$
$c^2-20c^2+100$
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