$3x+2<x-8$
$\frac{z^4}{z^3}$
$23.51\cdot78.69$
$\frac{1}{\cos x}+\frac{\sin x}{\cos x}$
$\int\frac{\left(7x^3+4x^2+7x-5\right)}{x}dx$
$\frac{-21x^8y^2}{-3y^5y^22}$
$4\left(1+a\right)^2-4\left(1+a\right)+1$
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