Factorize 5y 2 + 2ay - 3a 2
MATHEMATICS
WAEC 2008
Factorize 5y2 + 2ay - 3a2
- A. (a - y)(5y - 3a)
- B. (y - a)(5y - 3a)
- C. (y - a)(5y + 3a)
- D. (y + a)(5y - 3a)
Correct Answer: D. (y + a)(5y - 3a)
Explanation
5y2 + 2ay - 3a2= 5y2 + 5ay - 3a2
= 5y(y + a) - 3a(y + a)
= (y + a)(5y - 3a)
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