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Obtain the value of (√7 + 1)^3 – (√7 – 1)^3 using binomial expansion method.

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Obtain the value of (√7 + 1)3 – (√7 – 1)3 using binomial expansion method.

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(√7 + 1)3 – (√7 – 1)3

= 6 × 7 + 2
= 42 + 2 = 44

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