Question

Please help me answer this question pls​

Answer 1

using identity - (a+b) (a-b) = a²-b²

√15² - √2² = 15-2= 13

Answer 2

Answer:

answer is 13

Step-by-step explanation:

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

so in this (√15+√2)(√15-√2)=15-2

=13

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