$\int_0^{00}\left(e^{-x}cosx\right)dx$
$\left(-12\right)^{-7}\cdot\left(-12\right)^7$
$tan\left(2\pi\:-\theta\:\right)=-tan\theta\:$
$\left(3a^5+2b\right)\left(3a^5-2b\right)$
$ap-bp-aq+bq$
$\lim_{x\to0}\left(\frac{\ln\left(cos5x\right)}{\ln\left(cos3x\right)}\right)$
$\frac{2x^4-8x^3+4x^2-11x-1}{x^2-1}$
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