$\int\frac{4x^3}{\left(7x^4-3\right)^2}\:dx$
$\frac{14}{z^2-3z}$
$\lim_{x\to\infty}\left(\frac{1}{e^{x^2}}\right)$
$\sqrt{2+x}-4+\sqrt{10-3x}=0$
$\frac{100x+1900}{x^2+1}$
$\left(2x\sqrt{x^2+1}\right)^2$
$-24-+-48$
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