$\frac{\left(1+2v\right)}{\left(v^2+v+1\right)}dv=-\frac{3}{x}dx$
$b^2+19b+90$
$\frac{\left(2m^2-3mn+5m+3n-7m\:\right)}{m-1}$
$27w^6-8y^9$
$2x-3-x+8$
$4m^2-8m+12$
$ikx+bx^2$
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