$\int\frac{1}{25+x\:^2}dx$
$\frac{\left(3x+4\right)}{5}+2\le\frac{\left(x+3\right)}{4}$
$\left(2x+y+1\right)dx+\left(x+2y-1\right)dy$
$20-\left(-2\right)\cdot\left(-10\right)+\left(-5\right)\cdot\left(-2\right)$
$2x^{-3}$
$2m^2+2m-2n^2$
$x^2+1x-76$
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