$\frac{-3x^3-2x+x^2}{-5x}$
$x+4>2$
$\left(\frac{d^2e^3}{y^4}\right)^5$
$\frac{sin\left(x-b\right)}{cosx\cdot cosb}$
$x^2-21x+20<0$
$\sqrt { | x - 1 | ^ { 2 } }$
$\frac{1+\cos\:\left(\theta\:\right)}{\cos\:\left(\theta\:\right)}=\frac{\left(\tan\:\left(\theta\:\right)\right)^2}{\sec\:\left(\theta\:\right)-1}$
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