$2x^5+3x^4-18x-27\:$
$\cos^2x\sin^3\left(x\right)=\frac{1}{16}\left(\sin\left(3x\right)-\sin\left(5x\right)+2\sin\left(x\right)\right)$
$x^2y-y^2$
$36x^2-6xy-12x+2y$
$\:\left(7a^2-5a^3\right)^2$
$\frac{4x}{3}-9\le8x+2$
$16x^2-192x+576$
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