passwella.
Menu

WAEC Mathematics 1994 Question 21

Question 21

Algebraic Expressions

Which of the following is not a factor of 2p2 − 2?

  1. A.2
  2. B.p − 1
  3. C.p + 1
  4. D.2p − 2
  5. E.2p + 1
Show the answer and explanation

Answer: E (2p + 1)

Explanation

2p² − 2 = 2(p − 1)(p + 1), so 2, p − 1, p + 1 and 2(p − 1) = 2p − 2 are all factors; 2p + 1 is not.