$\int\frac{2x^2-x+1}{x^2+8x+16}dx$
$\frac{256}{2}$
$\int\left(\frac{x^2+6x-11}{x^3-7x+6}\right)dx$
$\left(3x^4+3x^3-2x^2\right)^2$
$\left(x+2\right)\left(xz-2x+y\right)$
$x^2=2x+9$
$m^2-+-42>0$
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