$11a^2b^2+33a^5b^3+44a^2b^4$
$\left(\frac{2}{3}+2k\right)\left(\frac{2}{3}-2k\right)$
$7^{2x}-6\cdot7^x+5=0$
$\int^4e^{2x}dx$
$( 2 a b - 6 a )$
$\frac{d}{dx}e^{.4t^2}$
$2^{6-3}$
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