Question

Help me to find answer!!!​

Answer 1

Answer:

4

Step-by-step explanation:

using identity: $(a+b )(a-b )=a^2-b^2$

$(\sqrt{11} -\sqrt{7} )(\sqrt{11} +\sqrt{7} )$

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

$11-7$

$4$

Answer 2

Ans is 4
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