NABTEB Mathematics 2022 Objective — Question 16
Question 16 of 50 from the National Business and Technical Examinations Board (NABTEB) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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What value of p will make (x^2-4x+p) a perfect square?
- A. -2
- B. 16
- C. 4Correct
- D. -8
Explanation
Comparing with x^2+bx+c: b=-4, c=p. For a perfect square, b^2=4c: (-4)^2=4p, 16=4p, p=4.
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