$\frac{dy}{dx}=\sqrt{x}-4$
$\frac{q+6}{5}-\frac{q-4}{4}=2$
$\frac{1}{1-x^{11}}$
$\frac{x+1}{\:2}+\frac{x+2}{3}+\frac{x+3}{4}\ge\:\frac{77}{4}$
$7m^2+\left(2m-1\right)\left(m+9\right)$
$\lim_{x\to-2}\frac{x^3+3x^2-4}{x^3+5x^2+8x+4}$
$\frac{d}{dx}\frac{x^4}{4}$
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