$9x^2-30x+9$
$sin4xsin3x$
$\int\frac{8x}{x^3+8}dx$
$\left(6a-16m\right)^2$
$\left(6-5i\right)-\left(2-3i\right)$
$2\cos^2x-3\cos x+1=0$
$\frac{3}{4}\left(3x-5\right)\:$
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