$\int\csc\left(4x\right)\tan\left(4x\right)dx$
$-a-a-a-b-b-b$
$x^3y^6+\frac{9}{27}z^3$
$7-\left(-15+8-9\right)$
$\cos\left(a\right).\sec\left(a\right)=\csc\left(a\right)$
$y^{'\:}=1\:-xy$
$20^2$
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