$3y^2-y-10$
$\lim_{x\to0}\left(\frac{e^x-e^{-x}-2x}{sen^2x}\right)$
$\int\frac{x+1}{4-x^2}dx$
$\int\sqrt{1-\cos\left(4x\right)}dx$
$4x+3=7x-6$
$9\cdot7-6\cdot10-7\left(-4\right)$
$17x^{2}+34x+5$
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