BECE Mathematics 2022 Objective — Question 76
Question 76 of 120 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2022 Objective paper, with the correct answer and a full explanation.
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Expand (-5k) (x - 4k).
- A. 20k² -5kxCorrect
- B. 20k² + 5kx
- C. -(20k² - 5kx)
- D. -(20k² + 5kx)
- E. -(20k + 5kx)
Explanation
(-5k)(x) = -5kx and (-5k)(-4k) = +20k². So the answer is 20k² - 5kx.
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