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JAMB Mathematics 1982 Question 17

Question 17

Algebraic Expressions

If f(x − 2) = 3x2 + 4x + 1. Find f(1)

  1. A.8
  2. B.40
  3. C.7
  4. D.32
  5. E.21.
Show the answer and explanation

Answer: B (40)

Explanation

f(1) needs x − 2 = 1, so x = 3: 3(9) + 12 + 1 = 40.