$csc^2x-cot\:x-3=\:\left(cot\:x-2\right)\left(cot\:x+1\right)$
$97\cdot24$
$12x^2\cdot2x^2$
$14m^2m^3+16mn^2-4n^4$
$\lim_{x\to\infty}\left(1-\frac{1}{x}\right)^{.2x}$
$\int\left(1+5w\right)\sqrt{w}dw$
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