$\cos\left(x\right)\cdot\csc\left(x\right)\cdot\tan\left(x\right)-\sin^2\left(x\right)$
$\int9x\sec^2\left(2x\right)dx$
$2-x<-3$
$-9+3\left(11+21\right)-32$
$\int\frac{z+1}{-z^2-1}dz$
$\frac{x^2+2x+6}{x-3}$
$0.000\:+\:9.0126+14+145.147+12$
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