$\cos\left(225\right)+3\sin\left(225\right)=-2\sin\left(45\right)$
$\frac{d}{dx}\tan^7x$
$y^8\:\cdot y^{12}$
$4x^my\left(-\frac{3}{4}+\frac{2}{5}\right)$
$\left(c-48\right)\left(c-54\right)$
$\frac{5x^4-3x^3+2x^2-7x-3}{x-1}$
$\left(10x^{10}+5\right)^2$
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