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Evaluate using the identity (a + b)2 = a2 + 2ab + b2(p2 – q2)2 |
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Answer» (a – b)2 = a2 – 2ab + b2 Here a = p2 , b = q2 (p2 – q2)2 = (p2)2 – (2)(p2)(q2) + (q2)2 = p4 – 2p2q2 + q4 |
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