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Question
Find the following squares by suing the identities.
(6x2 − 5y)2
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Solution
(6x2 − 5y)2 = (6x2)2 − 2(6x2) (5y) + (5y)2 [(a − b)2 = a2 − 2ab + b2]
= 36x4 − 60x2y + 25y2
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