Math, asked by question138, 1 year ago

if (x+1/x=2), then (x^2 + 1/ x^2) is equal to what?​

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Answered by Anonymous
5

solution is attached above........

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question138: are 0, 1, 2, 3
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Answered by Anonymous
1

(X+1/X)^2 = 2^2

or, (x^2 + 1/x^2) +2* x*1/x = 4

or, x^2+ 1/x^2 +2=4

or, x^2 + 1/x^2 = 4-2

or, x^2 + 1x^2 = 2

[ Hint: (a+b)^2 = a^2+b^2 + 2ab

          (a^2+b^2) = (a+b)^2-2ab ]

         

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