$2cos^2\theta\:+cos\theta\:=0$
$\frac{csc\cdot cot}{sec}=cot^2$
$\lim_{x\to\infty}\left(\frac{x^2+1}{x\ln\left(x\right)}\right)$
$\left(4x+2\right)\left(+-5\right)$
$\frac{\left(\sin\left(2x\right)\right)}{1-\cos\left(2x\right)}$
$\left(y^3+3y^2-6\right)\cdot\left(2y^2+3y\right)$
$6x-14=4x-48$
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