$\frac{d}{dx}\sqrt{9+4x^2}\:x=2$
$4\left(x+y\right)-3\left(x-y\right)$
$6xz-16y-24x+4yz$
$\int_1^2\left(\frac{x}{x^2-9}\right)dx$
$220+45-6+20$
$\int_0^{\infty}\left(\frac{2x}{\left(x^2-a^2\right)^{\frac{2}{3}}}\right)dx$
$\left(2x\right)^1$
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