$\frac{x-2}{x-a}\le2x-1$
$\left(a^2b\right)\left(ab^3\right)$
$p=\left(1-\cos^2\left(x\right)\right)\cot\left(x\right)$
$\int5x^{-7}dx$
$\int\left(-7x+2\right)^7dx$
$\lim_{x\to0}\left(\frac{ln\left(cos\left(x\right)\right)-1+cosx}{x^2}\right)$
$\left(x^2-3y^2\right)dx+\left(2xy\right)dy=0$
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