Question

if x+1/x

=2, find the value of x^4 - x^3.​

Answer 1

Answer:

take x=1 then x+1/x=2

x4=1

x3=1

therefore x4-x3=1-1=0

answer is 0

Answer 2

Given,

x+1/x = 2

x+1 =2x

x=1

x^4 - x^3

= 1^4 - 1^3

= 1 - 1

=0