Question

What is the value of 
(√11-√7)×(√11+√7) *

a) -4

b) 4

c) √11

d) √7

​

Answer 1

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

Answer 2

Answer:

it will be

Step-by-step explanation:

$(\sqrt{11} - \sqrt{7)}^{2} }$

11-7

4

answer is option

B) 4

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