$sin\left(2arctan\left(\frac{1}{x}\right)\right)=\frac{2x}{1+x^2}$
$3-2x\ge7$
$\left(10\right)^3+\left(xy\right)^3-\left(xn\right)^3$
$2\sec\left(a\right)-4=0$
$\int\left(12x\:ln\:7x\right)dx$
$\:\:2\:m\:\:+\:\:5m\:\:-3\:m\:-\:m\:\:+\:9m\:\:$
$\left(3x^4\:-7p^2\right)^2$
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