$\int\left(\sec\left(3x\right)^2\right)dx$
$\left(7\cdot\:6\right)^3$
$\frac{1}{1-sinx}+\frac{1}{1-sinx}$
$\int\left(u\sec\left(x\right)^2\right)dx$
$3b^2-3b-18$
$\frac{2x^3-5}{x^2-1}$
$2p^2-3p$
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