Question

if X+1/x=9 then x^2+1/x^2 =????

Answer 1

Consider (x – 1/x) = 9 Squaring on both the sides, we get [x – (1/x)]2 = 32 x2 – 2 (x) (1/x) + (1/x2) = 9 x2 – 2 + (1/x2) = 9 Therefore, x2 + (1/x2) = 9 + 2 = 11

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Answer 2

Answer:

79

Step-by-step explanation: