Question

if x+1/x=6,find value of x^3-1/x^3​

Answer 1

Answer:

x+1/x = 6

x+1= 6x

5x = -1

x = -1/5

then, x³ = -1/125

x³ - 1/x³ = -1/125-1/-1/125

             = 126

Answer 2

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