Factorize the expression 2y 2 + xy - 3x 2
MATHEMATICS
WAEC 1992
Factorize the expression 2y2 + xy - 3x2
- A. 2y (y + x) - 3x2
- B. (2y - x)(2y + x)
- C. (3x - 2y(x - y)
- D. (2y + 3x)(y - x)
Correct Answer: D. (2y + 3x)(y - x)
Explanation
2y\(^2\) + xy - 3x\(^2\)
2y\(^2\) + 3xy - 2xy - 3x\(^2\)
y(2y + 3x) - x(2y + 3x)
= (y - x)(2y + 3x)
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