Question

what is the value of (x³-1/x^3) if x/2 = 1/2 +1​

Answer 1

Answer:

hope it helps you thanks..

Step-by-step explanation:

Given: x+1/x = 3

Cubing both sides

(x+1/x)^3 = 3^3

Now, using the formula ( a+b)^3

x^3 + 1/x^3 + 3× x × 1/x ( x+ 1/x) = 27

x^3 + 1/x^3 + 3 (x+1/x) = 27

A/q: x+ 1/x = 3

x^3 + 1/x^3 + 3 (3) = 27

x^3 + 1/x^3 = 27-9

x^3 + 1/x^3 = 18

Answer 2

Answer:

x/2 = 1/2 +1

x=2(3/2)

x=3

now

(x³-1/x^3)

(3^3-1)/3^3

(27-1)/27

26/27