Solve r2−7r+12=0r^2 - 7r + 12 = 0r2−7r+12=0.
r=3,4r = 3, 4r=3,4
r=2,6r = 2, 6r=2,6
r=1,12r = 1, 12r=1,12
r=−3,−4r = -3, -4r=−3,−4