$\int\frac{4e^{2x}}{e^x+1}dx$
$\frac{1+\sin\left(x\right)^2}{\cos\left(x\right)^2}=2\sec\left(x\right)-1$
$x^2+15x+27=2x^2+24x+41$
$\int\frac{e^{\frac{-1}{x}}}{x^2}dx$
$5\left(-1\right)+1$
$\left(3a+ab\right)+\left(3c+bc\right)$
$m-2m$
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