newmoon wrote:

If \(x + \frac{2}{x} = 3\) what is the value of \(x^3 + \frac{8}{x^3} =\) ?

A) 1

B) 8

C) 9

D) 16

E) 18

x+2/x = 3

x^2 -3x +2 = 0

x = 2,1

If x = 2 , x^3 + 8/x^3 = 2^3 + 8/2^3 = 9

If x = 1, x^3 + 8/x^3 = 1^3 + 8/1^3 = 9

Answer C
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