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If x2+1/x2=98x ^ 2 + 1 / x ^ 2 = 98 find the value of x+1/xx + 1 / x

A12

B11

C10

D9

Answer:

C. 10

Read Explanation:

(x+1/x)2=x2+1/x2+2(x+1/x)^2=x^2+1/x^2+2

(x+1/x)2=98+2(x+1/x)^2=98+2

(x+1/x)2=100(x+1/x)^2=100

x+1/x=100=10x+1/x=\sqrt{100}=10


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