Question

(√11-√7)(√11+√7) simply the following expressions​

Answer 1

Answer:

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Step-by-step explanation:

Using the identity

$(a + b) (a - b) = a {}^{2} - b {}^{2}$

Here, a =√11 and b = √7

Putting the values in formula, we get

$(√11-√7)(√11+√7) = ( \sqrt{11)} { }^{2} - ( \sqrt{7)} { }^{2} \\ \\ (√11-√7)(√11+√7) = 11 - 7 \\ \\ (√11-√7)(√11+√7) = 4$

Hence, (√11-√7)(√11+√7) = 4

Answer 2

Answer:

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