$4m+m$
$18x^2+12$
$11k+k-12k+k=16$
$\int\frac{1}{\left(5x-7\right)^2}dx$
$\int\:\frac{1}{2}\left(x+2x^2\right)\left(6x^2+1\right)dx$
$x^2+x+m-1=0$
$\frac{dy}{dx}xy+x=9$
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