Determine the roots of the characteristic equation r2−6r+9=0r^2 - 6r + 9 = 0r2−6r+9=0.
r=3,3r = 3, 3r=3,3
r=1,9r = 1, 9r=1,9
r=−3,−3r = -3, -3r=−3,−3
r=0,6r = 0, 6r=0,6