$2x+2>4$
$\left(-18\right)-\left(-31\right)-\left(-3\right)-\left(-16\right)-\left(-25\right)$
$\left(3x^n-7y^n\right)^2$
$\lim_{x\to\infty}\left(\sqrt{4x^2+x+1}\right)-2x$
$1,3\:+\:2,04\:x\:5\:$
$-778-773$
$x^2+9x-12+\left(-2x+3\right)\left(x+1\right)=0$
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