$\left(11x^7\:-7x^3+2x-26\right)\left(x-1\right)$
$\lim_{x\to0}\left(\frac{2x^2-3x}{\sin\left(x\right)}\right)$
$\sec^2x-2=0$
$8\:.\:9\:-\:2\:.\:5$
$\frac{\frac{3\tan\left(x\right)^2\cdot\sec\left(x\right)}{5\cos\left(x\right)^2}}{\tan\left(x\right)^2}$
$z^2-4z-3$
$9m^8-100y^6$
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