$\log_{10}\left(4x\:+2\right)=\log_{10}\left(2x\right)$
$36x^5-6x^2+18x^3$
$y\frac{dy}{dx}=10+x$
$x^2+6x=40$
$\lim_{x\to0}\left(\frac{3x^2-4x-11}{2x+1}\right)$
$4-5+3+8$
$\frac{x}{9}^2+\frac{4}{3}x\:+\frac{4}{9}$
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