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Multiple choice

Find the average of the sum of roots and the product of roots of the quadratic equation 3y2 - 42y + 24 = 0.

  1. 14

  2. 11

  3. 8

  4. 5

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

For 3y^2 - 42y + 24 = 0, divide by 3 to get y^2 - 14y + 8 = 0. The sum of roots is 14 and the product of roots is 8. The average of these is (14 + 8) / 2 = 11.

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