WAEC Mathematics 2016 Objective — Question 13
Question 13 of 50 from the West African Examinations Council (WAEC) Mathematics 2016 Objective paper, with the correct answer and a full explanation.
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13. Simplify 2/(1-x) - 1/x. A. (x+1)/(x(1-x)) B. (3x-1)/(x(1-x)) C. (3x+1)/(x(1-x)) D. (x-1)/(x(1-x))
- A. (x+1)/(x(1-x))
- B. (3x-1)/(x(1-x))Correct
- C. (3x+1)/(x(1-x))
- D. (x-1)/(x(1-x))
Explanation
2/(1-x) - 1/x = (2x-(1-x))/(x(1-x)) = (3x-1)/(x(1-x)).
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