8
Answer: ASet 5: Quadratic Equations (Intermediate)
Explanation
PROBLEM
For the equation x squared - 6x + 9 = 0, what is the sum of the roots?
For the equation x squared - 6x + 9 = 0, what is the sum of the roots?
A.✓ Correct
6
B.
5
C.
7
D.
8
Detailed Explanation
Choice A is the best answer. Sum of roots = -(-6)/1 = 6
Why others are wrong:
B: 5 is incorrect because it does not satisfy the equation.
C: 7 is incorrect because it does not satisfy the equation.
D: 8 is incorrect because it does not satisfy the equation.