6
Answer: DSet 2: Quadratic Equations (Advanced)
Explanation
PROBLEM
Solve: x squared - 9x + 18 = 0. Find the larger root.
Solve: x squared - 9x + 18 = 0. Find the larger root.
A.
4
B.
8
C.
5
D.✓ Correct
6
Detailed Explanation
Choice D is the best answer. Factor: (x - 6)(x - 3) = 0. Roots are 6 and 3. Larger: 6
Why others are wrong:
A: 4 is incorrect because it does not satisfy the equation.
B: 8 is incorrect because it does not satisfy the equation.
C: 5 is incorrect because it does not satisfy the equation.