$\frac{x-3}{x+2}<2$
$5x^2+2x>4x^2+2x+16$
$\sqrt{5\cdot3-1}$
$\int z^3e^z\:dz$
$\sin\left(x\right)^2-1-2\sin\left(x\right)$
$y'=\frac{2x}{1+2y}$
$\left(x+2x+1\right)^2$
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