Factorise : 2ab^2 - aby + 2cby - cy^2

2ab 2 \- aby \+ 2cby \- cy 2 = ab(2b \- y) \+ cy(2b \- y) = (2b \- y)(ab \+ cy) Hence,2ab 2 \- aby \+ 2cby \- cy 2 = (2b \- y)(ab \+ cy)

Mathematics

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2ab² - aby + 2cby - cy²

= ab(2b - y) + cy(2b - y)

= (2b - y)(ab + cy)

Hence,2ab² - aby + 2cby - cy² = (2b - y)(ab + cy)

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