$\left(-6x-9\right)\left(6x+9\right)$
$\frac{dy}{dx}=yx\:ln\:x$
$\int\left(\frac{sin\left(25x\right)}{1+\cos^2\left(25x\right)}\right)dx$
$12a^2+48ab+8b^2$
$\left(a+\sqrt{8}\right)^2$
$\frac{m}{4}=\frac{3}{m-2}$
$\left(x^2-5x\right)\left(3x^2+2x-9\right)$
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