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· 1 Months ago

ERROR (Question: 186668.0 )

PLZ CORRECT THE QUESTION

Question:
If \(x=a^\cfrac{1}{2}+a^{-\cfrac{1}{2}}, \ \ y = a^\cfrac{1}{2}\ - a^{-\cfrac{1}{2}}\) , then value of  (x4 - x2 y2 - 1) + (y4 - x2y2 + 1) is –
Options:
A) 14
B) 16
C) 12
D) 13
Solution:

Ans: (B)


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