$1+cot^2y$
$32\:x\:2704$
$\frac{2^2a^2b}{2ab^5}$
$\left(a^2\right)-\left(ba-b^2\right)-\left(ba-b^2\right)-\left(b^2\right)$
$7\:-2.\:\left[\:2\:-3\:-\:3.\:\left(2\:+8\right)\:-2+13\right]-4\:$
$2\cot\left(x\right)=\csc^2\left(x\right)$
$-1x^2-4x$
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