$121b^4-81$
$2x-3<x+10$
$\lim_{x\to\infty}\left(\frac{ln\left(4x+7\right)}{ln\left(7x+5\right)+1}\right)$
$\int z^3\:in\:z\:dz$
$\left(\frac{x^2}{y^{-3}}\right)^{-5}$
$2x-9<5x+5$
$1-2\cdot\sin\left(x\right)^2-\sin\left(x\right)=0$
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