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WAEC - Mathematics (2008 - No. 10)

Factorize 5y2 + 2ay - 3a2
(a - y)(5y - 3a)
(y - a)(5y - 3a)
(y - a)(5y + 3a)
(y + a)(5y - 3a)

Paliwanag

5y2 + 2ay - 3a2 = 5y2 + 5ay - 3a2

= 5y(y + a) - 3a(y + a)

= (y + a)(5y - 3a)

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