$s^3+s^2-10s+8$
$\frac{\sqrt{2-2\cos\left(x\right)}}{\sin\left(x\right)}$
$-\frac{126}{21}$
$\left(x-1\right)\left(x+1\right)-\left(x+1\right)^2$
$\ln\sqrt[3]{\frac{1-\sin\left(x\right)}{1+\sin\left(x\right)}}$
$m6-36$
$\left(3a-b\right)\left(5a+2b\right)$
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