$\int\frac{x^2+2x-1}{\left(x-1\right)\left(x^2+9\right)}dx$
$m^2+2m+18$
$\csc^2x-1\sec^2x=\csc^2x$
$\frac{2x\left(x-4\right)}{-x\left(y-1\right)}$
$\frac{x^2+2x+1}{x^2+6x+7}$
$20x^2+44x-15x$
$\int\frac{1}{v^2-6v+5}dv$
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