Question

simplyfy (root 13 + root 15 ) (root 13 - root 15 )​

Answer 1

Step-by-step explanation:

a+b) (a-b) =a²-b²

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Answer 2

Answer:

Answer is -2.

Step-by-step explanation:

As we know a^2 - b^2 = (a+b)(a-b)

So here a is √13 and b is √15

So (√13)^2 - (√15)^2 = 13-15 = -2