Question

If x4 – x2 + 1 = 0, then what's the value of x3 + 1/x3 = ?​

Answer 1

Answer:

= -13/6

Step-by-step explanation:

First, we will have to solve the equation

= 4x-2x+1=0

= 2x+1=0

= 2x = -1

= x = -1/2

Now, putting x = -1/2 in 3x + 1/ 3x

= 3(-1/2) + 1/ 3(-1/2)

= -3/2 + 1/-3/2

= -3/2 + (-2/3) ( Multiplication of 2 in 1 )

= -9/6 - 4/6. ( simplifying -3/2 - 2/3 )

= -13/6

Hopefully, you are satisfied