passwella.
Menu

WAEC Mathematics 1999 Question 21

Question 21

Algebraic Expressions

Given that m = −3 and n = 2, find the value of (3n2 − 2m3)/m

  1. A.−22
  2. B.−14
  3. C.14
  4. D.22.
Show the answer and explanation

Answer: A (−22)

Explanation

3n2 = 12 and 2m3 = −54, so the numerator is 12 + 54 = 66. 66 ÷ (−3) = −22.