Factorize 5y2 2ay - 3a2 - WAEC Mathematics 2008 Question
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 option: d
5y2 + 2ay - 3a2 = 5y2 + 5ay - 3a2
= 5y(y + a) - 3a(y + a)
= (y + a)(5y - 3a)
= 5y(y + a) - 3a(y + a)
= (y + a)(5y - 3a)
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