$\left(\left(\sqrt{x}-1\right)\left(\sqrt{x}+1\right)-1\right)^2$
$2x-5<\frac{1}{2}y$
$\left(x^2-x\right)\left(x+3\right)$
$\frac{sin2x}{2cosx}-sin^2x=cos^2x$
$\int\:\frac{1}{8}\:cos\:\frac{x}{4}\:dx$
$\int\frac{\arccos\sqrt{x}}{\sqrt{x}}dx$
$ab^2-30a^225a^4$
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