$1+3.20-18$
$6x+5>4x+11$
$\int_{\frac{7\pi}{2}}^{4\pi}cos\left(2x\right)dx$
$\int_1^2\left(\frac{1}{\sqrt{x^2-x}}\right)dx$
$\sec^235-\csc^255$
$\sin^2\left(x\right)-\cos\left(x\right)+1=0$
$\left(13\:-\:\sqrt[2]{13\:+\:4x}\right)^2$
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