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WAEC Mathematics 2014 Objective — Question 18

Question 18 of 50 from the West African Examinations Council (WAEC) Mathematics 2014 Objective paper, with the correct answer and a full explanation.

If (x−a) is a factor of bx−ax+x²−ab, find the other factor.

A. (x+b)Correct
B. (x−b)
C. (a+b)
D. (a−b)

Explanation

bx−ax+x²−ab = x(x+b)−a(x+b) = (x−a)(x+b), so the other factor is (x+b).

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