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BECE Mathematics 2023 Objective — Question 88

Question 88 of 120 from the Basic Education Certificate Examination (Junior WAEC) (BECE) Mathematics 2023 Objective paper, with the correct answer and a full explanation.

Find the coefficient of xy in the expansion of (3x + 2y)(5x − 3y).

A. 9
B. −6
C. 1Correct
D. 10
E. 15

Explanation

xy terms: 3x(−3y) + 2y(5x) = −9xy + 10xy = xy. Coefficient = 1.

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