$-16-\left(-45\right)$
$2^5-2^2$
$\frac{cos\left(u\right)+1}{sin\left(u\right)}+\frac{sin\left(u\right)}{1+cos\left(u\right)}$
$\left(2x^2+2\right)\cdot\left(5x^2-3\right)$
$\left(s+1\right)^5$
$\left(7x+6\right)\left(-7x+2\right)$
$-88-531$
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