4
Answer: BSet 1: Quadratic Equations (Advanced)
Explanation
PROBLEM
Solve: x squared - 9x + 8 = 0. Find the larger root.
Solve: x squared - 9x + 8 = 0. Find the larger root.
A.
7
B.✓ Correct
8
C.
10
D.
9
Detailed Explanation
Choice B is the best answer. Factor: (x - 1)(x - 8) = 0. Roots are 1 and 8. Larger: 8
Why others are wrong:
A: 7 is incorrect because it does not satisfy the equation.
C: 10 is incorrect because it does not satisfy the equation.
D: 9 is incorrect because it does not satisfy the equation.