$-\left(-1\right)+\left(1\right)-\left(-1\right)-\left(1\right)+\left(1\right)$
$\int_2^{+\infty}\left(x^2\ln x\right)dx$
$\lim_{x\to0}\left(\frac{e^2+e^{-2}-2\cos\left(x\right)}{x\sin\left(x\right)}\right)$
$5x+3>7x-3$
$144\:^2$
$\left(\frac{a}{2}\right)+10=19$
$4a^2-10a-25$
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