$\csc\left(x\right)-\tan\left(x\right)\cos\left(x\right)=\cos\left(x\right)\cot\left(x\right)$
$\left(x+1\right)\left(x+7\right)\left(x-7\right)$
$y=x+2\:para\:x=2$
$\int e^3\left(x^2+2x+1\right)dx$
$10\left(7x\right)\left(5\right)$
$\int_0^{\frac{\pi}{2}}x\:cos\:\left(x\right)\:dx$
$\left(y-2\right)^3$
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