The discriminant of a quadratic equation is calculated through the equation, D = b² - 4ac In the given above, a = 5, b = -4, and c = 3. Substituting these values to the equation, D = (-4)² - 4(5)(3) = -44 Since the discriminant is negative, the roots are non-real.
This question calls for ratios. Reuben drove 268 miles with 12 gallons. 268 divided by 12 is , so he can drive 22 and one third of a mile with one gallon. Multiply that by 9 and you will get 201 miles, which is how much he can drive using 9 gallons of gas
