$\sqrt[3]{\frac{cscx-senx}{secx-cosx}}$
$a\left(1+a+a^2\right)-a$
$1+tan^2x-sec^2x=0$
$\cos\left(2x\right)=-0.53$
$\frac{d}{dx}\:x^2+y^2$
$\frac{x+5y}{2}+\frac{3x+5y}{3}$
$x^2-30x+125=0$
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