$\left(\sqrt{2x+1}\right)^2-\left(5\left(\sqrt{2x+1}\right)\right)+4$
$\lim_{x\to0}\left(\frac{3x\cos\left(8x\right)-1}{\sin\left(7x\right)-7x}\right)$
$5\left(2d+3\right)+6$
$\sqrt[4]{0}$
$15m^3-40m^2$
$\left(2x+2y+3\right)\left(3x-1\right)$
$\int\frac{2}{1+3x}dx$
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