1.   Use the quadratic formula to solve 2x2 + 7x + 4 = 0. Approximate the solutions to the nearest hundredth.
    A. -2.78, -0.72 B. -3.35, -0.15
    C. 1.28, 3.66 D. -5.56, -1.44
    Hint

  2.   Which method of solving quadratic equations is best suited for the equation x2 – 18x = 0
    A. quadratic formula B. factoring
    C. completing the square D. graphing
    Hint

  3.   How many real roots exist if the discriminant of the equation = 0?
    A. 1 B. 2
    C. cannot be determined from given information D. 0
    Hint

  4.   How many real roots are there for the equation 2x2 + 6x + 3?
    A. 0 B. 1
    C. 2 D. cannot be determined from given information
    Hint

  5.   Which of the following equations will have exactly 1 real root?
    A. x2 – 6x – 9 B. 9x2 + 12x – 4
    C. 4x2 – 8x + 4 D. 2x2 + 5x – 16
    Hint



Glencoe
The McGraw-Hill Companies