New Doc 24 - WordPress.com › ... · Hence, new expression = 41 + 20xy + 25y = (2x)2 + 2 x (2x) x...
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New Doc 24 - WordPress.com › ... · Hence, new expression = 41 + 20xy + 25y = (2x)2 + 2 x (2x) x (5y) + (5y)2 = ('21 + 5y)2. What must be added to 16m — 24mn to make it a perfect