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Answer:. ur answer is ; option (A) 4.
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Answer:
The correct answer of the given problem is (A) 4.
Step-by-step explanation:
This can be done by two consecutive steps of squaring shown as follows:
x-1/x = 2
(x-1/x)^2 = 4 ( Squaring both sides)
x^2 + 1/x^2 - 2. x . 1/x = 4
So, x^2 +1/x^2 = 6
Again, squaring both sides we get:
x^4 + 1/x^4 + 2. x^2.1/x^2 = 6
so, x^4 + 1/x^4 = 4
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