Question

Simply this equation...​

Answer 1

Answer:

4

Step-by-step explanation:

According to (a - b)(a + b) = a² - b²,

let a = √11   &   b = √7

Therefore,

(√11 - √7)(√11 + √7)

(√11)² - (√7)²

11 - 7 = 4

∴ 4 is the answer.

You can do it also by taking a = √11    &    b = - √7.

Thank you. Have a nice day. :-)

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