WAEC Mathematics 2017 Objective — Question 11
Question 11 of 50 from the West African Examinations Council (WAEC) Mathematics 2017 Objective paper, with the correct answer and a full explanation.
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One factor of 7x^2+33x-10 is
- A. A. 7x+5
- B. B. x-2
- C. C. 7x-2Correct
- D. D. x-5
Explanation
7x^2+33x-10 = 7x^2+35x-2x-10 = 7x(x+5)-2(x+5) = (7x-2)(x+5). So 7x-2 is a factor.
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