mr fantastic MHF Hall of Fame Dec 2007 16,948 6,768 Zeitgeist May 8, 2010 #2 morganfor said: I'm stuck on how to factor this: r^3+4r^2+7r+6=0 thanks! Click to expand... You're expected to note that r = -2 is a solution to r^3+4r^2+7r+6=0 and therefore (r + 2) is a factor of r^3+4r^2+7r+6. Therefore you can find the quadratic factor of r^3+4r^2+7r+6 using polynomial long division etc.

morganfor said: I'm stuck on how to factor this: r^3+4r^2+7r+6=0 thanks! Click to expand... You're expected to note that r = -2 is a solution to r^3+4r^2+7r+6=0 and therefore (r + 2) is a factor of r^3+4r^2+7r+6. Therefore you can find the quadratic factor of r^3+4r^2+7r+6 using polynomial long division etc.