$11y+2y$
$\frac{8x^2+6x+4}{x+2}$
$-\frac{1}{3}x^2-\frac{1}{2}x^2$
$\:\lim_{x\to\:4}\frac{2-\sqrt{4x-12}}{x-4}\:$
$\left(2.3\cdot5.1\right)+\left(1.7\cdot5.1\right)$
$3\cos^2x=3\cos x$
$\lim_{x\to3}\left(\frac{3x^2-27}{2x-6}\right)$
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