$3+\left(7+5\right)^2\:x\:6$
$\lim_{x\to\frac{\pi}{2}}\left(sec^3x+tan^3x\right)$
$\frac{\sin\left(y\right)}{1\:+\:cos\:y}+\frac{1+cos\:y}{sen\:y}=2\csc\:y$
$3x+5\ge4x-1$
$\ln\left(x+5\right)+3=2$
$1+12x+36^2$
$cos\left(x+\pi\right)+sin\left(x-\pi\right)=0$
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