$x^2+5x+5>0$
$-2-20a=-20a-2$
$\left(2sin^22t\right)dx+cosx\left(1+cos2x\right)dt$
$3\left(x+1\right)\left(x-4\right)$
$\lim_{x\to+\infty}\left(\frac{x+in\left(3\right)}{x-in\left(3\right)}\right)$
$\int\left(\frac{12}{\sqrt{s}}\right)ds$
$13.5-73+95.11$
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