$t^2-8t+25$
$\frac{3x^2+2x-1}{x+2}$
$3\sec\left(x\right)=\sec^2\left(x\right)+2$
$\frac{30a^{11}b^9}{10a^2b^4}$
$\left(4+2x\right)^3$
$6d+d$
$\lim_{x\to-2}\left(\frac{x^3+3x^2-4}{\:x^2-x-6}\right)$
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