$45\cdot110$
$15x^2-x-2$
$4\sin x=2$
$sen^8x\:+sen^6+\cos^2x+sen^4x\cos^2x$
$\lim_{x\to0}\left(\frac{\tan\left(x\right)}{x^2\cdot\cot\left(3x\right)}\right)$
$\lim_{x\to0}\frac{\sin\left(6x\right)}{6}$
$\int_1^2\csc\left(x\right)dx$
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