Question

If 3x- (1/3x)=27 then find (x-1/x)^3

Answer 1

Step-by-step explanation:

3x - (1/3×) = 27

3x- 1/3x = 27

9x^2 - 3x = 27

x^2 - 3x = 27/9

x - 3x = √3

-2x = 1.73

x= 1.73/-2

x = - 0.865

we find,(x-1/x)^3

put the value of x

= ( -0.865 - 1/ -0.865)^3

= ( - 1.865/-0.865)^3

= (2.15)^3 = 9.93 Answer