$\int\frac{\log\left(x\right)a}{x^{a+1}}dx$
$\lim_{x\to0}\:x\:\left(arctg\left(e^x\right)-\frac{\pi}{2}\right)$
$tan^2\left(x\right)-5tan\left(x\right)-6=0$
$\frac{560\sin106^{\circ}}{\sin24^{\circ}}$
$c^2+21c-108$
$343x^3-y^{36}$
$25x^2-800x+64$
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