$\frac{7x-\frac{2x}{3}}{5y-\frac{y}{3}}$
$5x^2-60=0$
$\frac{d}{dx}\left(x^x\right)\sin2x\left(2x-e^{8x}\right)$
$6x-3+2x^2+3x+x^2$
$2^3\cdot2^3\cdot2\cdot2^{02}$
$21x^2\:-55x\:\:+14$
$\frac{1}{1-cos\theta\:}-\frac{1}{1+cos\theta\:}=2cot\theta\:\:csc\theta\:$
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