$csc\theta\:\left(csc\theta\:-sin\theta\:\right)=cot^2\theta\:$
$\int_0^{\frac{17}{2}}\left(\frac{x^2}{\sqrt{289-x^2}}\right)dx$
$-18c^6+30c^3-8$
$5h-6h+4h$
$342.171-28.17$
$sqrt\left(\left(sqrt2\:\cdot a\right)^2+a^2\right)$
$4x^2-12x+48$
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