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Identity (x+y)(x-y)

Simplify √11-...

Question

Simplify (√11-√7)(√11-√7)

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Solution

Above solution is correct. The question is (√11-√7)(√11-√7), after that applying formula of (a+b)^2 = a^2 + b^2 + 2ab, then we get 11+7-2 root(77).

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