$2x+1=x-5$
$sinx=-\frac{\sqrt{7}}{3}$
$\frac{1.2}{2}$
$\int-e^{3x}\cdot\cos\left(x\right)dx$
$x\:\ge\:2x\:-\:1$
$32.5+902$
$\frac{\left(cos^2\left(x\right)-sin^2\left(x\right)\right)}{1-tan^2x}$
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