$\frac{1}{cot\:1.4954949}$
$45m^2+\left(-7m^2\right)+\left(-8m^2\right)$
$61+-300$
$\left(1-x^2-x^3\right)^2$
$\left(4x-1\right)^2-\left(3x+1\right)^2$
$\int\left(1-cos^2\left(5x\right)\right)dx$
$5y^4\:\left(4y^3-3y^2-2y-5\right)$
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