Question

if X + 1 by x is equal to 6 find the value of x cube minus one by x cube​

Answer 1

Answer:

-15,624/125

Step-by-step explanation:

(x+1)/x=6

=>x+1=6x

=>6x=x+1

=>6x-x=1

=>5x=1

=>x=1/5

x³-(1/x³)

(1/5)³-1/(1/5)³

1/125-1/(1/125)

1/125-125

={1-(125×125)}/125

=(1-15,625)/125

=-15,624/125

Answer 2

Step-by-step explanation:

x+1/x = 6

x+1 = 6x

5x = 1

x = 1/5

1/x=5

finding x^3

x^3=( 1/5)^3

x^3 =1/125

finding (1/x)^3

(1/x)^3=5^3

= 125

now subtract 1/125 and 125

1/125-125= -124.992