Question

(root11-root7) (root11+root7)​

Answer 1

☛ ( √11 - √7 )( √11 + √7 )

☛ (√11)² - (√7)² { (a + b)(a - b) = a² - b² }

☛ 11 - 7

☛ 4

Answer 2

Answer:

We know,

that its a^2-b^2

=>11-7

=>4

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