WAEC - Mathematics (1988 - No. 27)

Factorize 5y\(^2\) + 2ay - 3a\(^2\)
(5y - a) (y + 3a)
(5y + a) (y - 3a)
5y2 + a (2y - 3a)
(y - a) (5y + 3a)
(y + a) (5y - 3a)

Explanation

5y 2 + 5ay - 3ay - 3a 2
5y(y + a) - 3a(y + a)
(y + a) (5y - 3a)

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