$-484-1,695$
$\left(\sec\left(x\right)\cdot csc\left(x\right)-\cot\left(x\right)\right)\cdot\tan\left(x\right)+1$
$\frac{\sin\:^2\left(-x\right)}{\tan\:^2\left(x\right)}$
$\int\frac{\left(x+2\right)}{\sqrt{3-x^2}}dx$
$\lim_{x\to0}\left(\frac{1+\sin\left(2x\right)}{1-\sin\left(2x\right)}\right)$
$30-\left(-20\right)+\left(-15\right)$
$2\left(3x-7\right)\:+\:5\left(1x\:+\:3\right)\:=\:23$
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