Question

simplify: (√11-7) (√11+7)

Answer 1

We have,

(√11-7)(√11+7)

=> (√11)^2-(7)^2

=> 11 - 49

=> -38

here we uses the identity

(a) ^2-(b) ^2 = (a+b) (a -b)

Answer 2

$\huge{HEY!!}$
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☞The question is that we have to simplify (√11-7) (√11+7)

☞For simplifying (√11-7) (√11+7),

☞We can see that in this question, we can apply identity of

▶▶(a + b) (a - b) = a² - b²

So, by putting values,

⚫(√11 + 7) (√11 - 7) = (√11)² - (7)²

⚫11 - 49

⚫By solving this, we get

-38

⚫⚫⚫So, our answer will be 38.