$2^4-\sqrt{1}$
$7x-2=-23$
$2\cdot\left(3-x\right)+2\left(x-1\right)\le3x-5$
$\lim_{x\to\infty}\left(\sqrt{4x+\sqrt{9x+\sqrt{10x}}-2\sqrt{x}}\right)$
$\left(4x+1\right)\left(5x-3\right)$
$\int x^2\sqrt{3x+4}dx$
$\frac{1-x^2}{\left(1+x^2\right)^2}$
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