$\tan\left(x\right)+\tan\left(x\right)\csc\left(x\right)=\tan\left(x\right)+\sec\left(x\right)$
$10\cdot\left[3-2\left(5-4\right)-2\cdot\left(4-2\right)\right]$
$\left(3a^2b+2b^2\right)^3$
$\int\left(x^2+6\right)\cdot sex\left(2x\right)dx$
$4x^2+2\sqrt{2x}+1$
$f^{20}-2^{20}$
$\frac{x}{2+8x^2}$
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