Question 41
Quadratic EquationsThe larger value of y for which (y − 1)2 = 4y − 7 is
- A.2
- B.4
- C.6
- D.7
- E.8.
Show the answer and explanation
Answer: B (4)
Explanation
y² − 2y + 1 = 4y − 7 gives y² − 6y + 8 = 0, so (y − 2)(y − 4) = 0. The larger value is 4.