## College Algebra 7th Edition

$x^2(3x^2-6x-1)$
The greatest common factor of the coefficients 3, -6, and -1 is $1$. The greatest common factor of $x^4,x^3$ and $x^2$ is $x^2$. Thus, the greatest common factor of the three terms is $x^2$. Factor out $x^2$ to obtain: $=x^2(3x^2-6x-1)$