Solution :
In the question we get, x2 + 1/x2 = 79
Now, = x2 + 1/x2 = 79 =(x + 1/x)2 – 2.x. 1/x = 79 or, (x + 1/x)2 – 2 = 79 or, (x + 1/x) = 81 ∴ (x + 1/x) = √81 = 9
Therefor, The value of x2 + 1/x2 will be 9
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Solution :
In the question we get,
x2 + 1/x2 = 79
Now,
= x2 + 1/x2 = 79
=(x + 1/x)2 – 2.x. 1/x = 79
or, (x + 1/x)2 – 2 = 79
or, (x + 1/x) = 81
∴ (x + 1/x)
= √81
= 9
Therefor, The value of x2 + 1/x2 will be 9