$\lim_{x\to0}\left(\frac{6e^{4x}-2e^{3x}-4}{sin\left(2x\right)}\right)$
$16^2+4\cdot2$
$\:8x^3+\:2^2\:-27x\:-18$
$x\frac{dy}{dx}-2x^2=0$
$c\left(19d-7d^2\right)+8cd-4cd^2$
$\frac{2}{n^2}-\frac{n-5}{n^2}=\frac{3n+15}{n^2}$
$3x-11<3$
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