$\left(-9x+4y\right)\left(-9x-12y\right)$
$\int2x^2\sqrt{x^3+4}dx$
$\left(x+3\right)\left(x-7\right)+2\left(x^2+x+10\right)$
$\left(3m\right)^{-2}$
$4563\cdot100$
$\cos\left(\frac{\pi}{6}+\frac{\pi}{4}\right)$
$-2\left(9\right)+2\left(7\right)-8\left(-6\right)$
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