$si\:x\:=\:-3$
$3x^2+7x+2=0$
$\ln\left(x^2-x-12\right)-\ln\left(2x+6\right)=\ln\left(0.5\right)$
$1-\frac{dy}{dx}=y$
$\left(5x^3y^2-3x^2\right)^2$
$2=4\cos^2x+1$
$\frac{\sin\left(4w\right)sin\left(\frac{7w}{2}\right)}{sin\left(\frac{w}{2}\right)}$
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