$4-\csc^2\left(x\right)=3-\cot^2\left(x\right)$
$-49-\left(-7\right)$
$\int7t\left(2t+1\right)^{\frac{3}{2}}dt$
$y2+16+64$
$\left(\frac{a^{-4}}{4x^{-1}}\right)^{-3}$
$3m^3+9m-6m^2$
$-2ab^2+5a^2b-4ab^2+7ab^2-4a^2b$
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