Q22 of 137 Page 99

Factories:

(x – 2y)2 + 4x – 8y

(x – 2y)2 + 4x – 8y


= (x – 2y)2 + 4(x – 2y)


= (x - 2y)(x -2y) + 4(x -2y)


= (x -2y){(x -2y) +4}


= (x – 2y)(x – 2y + 4)


So we get,


(x – 2y)2 + 4x – 8y = = (x – 2y)(x – 2y + 4)


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