Question 16
Quadratic EquationsWhat value of p will make (x2 − 4x + p) a perfect square?
- A.−2
- B.16
- C.4
- D.−8
Show the answer and explanation
Answer: C (4)
Explanation
A perfect square needs p = (half of −4)2 = 4, giving (x − 2)2.
What value of p will make (x2 − 4x + p) a perfect square?
Answer: C (4)
A perfect square needs p = (half of −4)2 = 4, giving (x − 2)2.