## College Algebra 7th Edition

$(5x+1)(x^2+1)$
Regroup to obtain: $=(5x^3+x^2)+(5x+1)$ Factor out $x^2$ in the first group to obtain: $=x^2(5x+1)+(5x+1)$ Factor out the greatest common factor $(5x+1)$ to obtain: $=(5x+1)(x^2+1)$