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Simplification
Which of the following is correct?
(4x - 5y)2 = 16x2 - 20xy + 25y2
(4x - 5y)2 = 16x2 + 40xy - 25y2
(4x - 5y)2 = 16x2 - 40xy + 25y2
(4x - 5y)2 = 16x2 - 20xy - 25y2
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Correct Answer:
(4x - 5y)2 = 16x2 - 40xy + 25y2
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