Question 14
Quadratic EquationsGiven that α and β are the roots of x2 + 5 = 7x, evaluate α + αβ + β
- A.12
- B.7
- C.2
- D.−2
Show the answer and explanation
Answer: A (12)
Explanation
x² − 7x + 5 = 0: α + β = 7 and αβ = 5, total 12.
Given that α and β are the roots of x2 + 5 = 7x, evaluate α + αβ + β
Answer: A (12)
x² − 7x + 5 = 0: α + β = 7 and αβ = 5, total 12.