$\int\frac{\left(1-x\right)}{x^2}dx$
$\int\:\frac{3x-4}{x^2+2x+4}dx$
$\left(a+5\right)\left(a-5\right)-3\left(a+2\right)\left(a-2\right)+5\left(a+4\right)$
$-10\le-1-w$
$\frac{3}{1-x}\ge2$
$-8-\left(2+10\right)$
$\left(4x-2\right)\left(2x+1\right)$
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