Question

Solve it further

8-2√15=8+2√15​

Answer 1

(8+2√15)(8-2√15)

If you look closely you will see that it is the identity of,

a² - b² = (a+b) (a-b)

So, (8+2√15)(8-2√15) = (8)² - (2√15)²

= 64 - 60

= 4

So our answer is 4.

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Answer 2

Answer:

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