Math, asked by sapnashaw123, 3 months ago

x+x+1+x-1+x+2+x-3=79 find the mean​

Answers

Answered by sonamsharmanamo
1

Answer:

We know that, (x + 1/x)^2 = x^2 + 1/x^2 + 2x + 1/x

Given , x^2 + 1/x^2 = 79

So, (x + 1/x)^2 = 79 + 2

       (x + 1/x)^2 = 81

       (x + 1/x ) = 9

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