Question

Can u solve me this problem

Answer 1

Answer:

9

Step-by-step explanation:

x^2 + 1/(x^2)  =  79

x^2 + 1/(x^2) + 2 = 81

(x + 1/x) ^ 2 = 81

Therefore x + 1/x = 9

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Answer 2

Answer:

The answer is 78

Step-by-step explanation:

x²+1/x²=79

or 2x +1/2x =79

or 2x +1 = 79×2x

or 2x+2=158

or 2x = 158-2

or 2x = 156

or x = 156/2

or x = 78