$\frac{\csc\left(x\right)+cos\:\left(x\right)}{sin\left(x\right)+\cos\left(x\right)}$
$\left(4x-3\right)\left(x+3\right)$
$\frac{3x^3-27}{x-3}$
$\int\text{sen}\frac{3x}{2}dx$
$2 + x y = 1$
$x^4-6x^5$
$\int_{-3}^5\left(7-x\right)dx$
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