Question

if x minus one by x is equal to 3 evaluate x cube - 1/x cube​

Answer 1

Answer:

36

Step-by-step explanation:

X minus 1 by X =3

By Cubing on both sides

You will get,

X cube minus 1 by X cube = 27

By applying (a-b) whole cube

U will get,

X minus 1by X whole cube =X cube 3minus 1/x cube - 3x(1/x)(x - 1/x)

Given,(x-1/x) =3

3cube = X cube - 1/x cube - 3(3)

27=X cube - 1/x cube-9

=36

Hope u understand

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