$m^2-7m+12=0$
$a+b+b-a$
$\frac{1-\sec^{2}\alpha}{1-\csc^{2}\alpha}$
$\left(3a+b\right)\left(2a+4b\right)$
$\int\left(1+x\right)^{11}dx$
$\lim_{x\to-\infty}\sin\left(x\right)$
$\frac{x^2+x+4}{x-1}$
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