JSCE Mathematics 2024 Objective — Question 42
Question 42 of 80 from the Junior Secondary Certificate Examination (JSCE) Mathematics 2024 Objective paper, with the correct answer and a full explanation.
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What is the coefficient of x in the expansion of (x + 3)(x - 5)?
- A. 2
- B. 1
- C. -15
- D. -2Correct
Explanation
(x + 3)(x - 5) = x^2 - 5x + 3x - 15 = x^2 - 2x - 15. The coefficient of x is -2.
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