9
Answer: CSet 2: Quadratic Equations (Intermediate)
Explanation
PROBLEM
For the equation x squared - 7x + 10 = 0, what is the sum of the roots?
For the equation x squared - 7x + 10 = 0, what is the sum of the roots?
A.
8
B.
5
C.✓ Correct
7
D.
9
Detailed Explanation
Choice C is the best answer. Sum of roots = -(-7)/1 = 7
Why others are wrong:
A: 8 is incorrect because it does not satisfy the equation.
B: 5 is incorrect because it does not satisfy the equation.
D: 9 is incorrect because it does not satisfy the equation.