msm97hxr22 msm97hxr22 22-10-2021 Mathematics contestada Solve the quadratic equation numerically (using tables of x- and y-values). x2 + 9x + 18 = 0 a. x = 6 or x = 2 c. x = -6 or x = -3 b. x = 6 or x = -3 d. X = 6 or x = -1