Question

if x+1/x=4 find the value of x3+1/x3 =

7

8

-7

-8

quick​ plzzz​

Answer 1

Answer:

2

Step-by-step explanation:

x+1/x=4 is your problem

so when we do cross multiply then

x+1=4xso now we want to get or find is 3x+1/3x

4x-x=1

3x=1

so x=1/3

let we substitute it in the 3x+1/3x

so we get

3(1/3)+1/3(1/3)

=1+1/1=2/1

=2