2x^8+x^4-3=

Solution for 2x^8+x^4-3= equation:

Simplifying
2x8 + x4 + -3 = 0

Reorder the terms:
-3 + x4 + 2x8 = 0

Solving
-3 + x4 + 2x8 = 0

Solving for variable 'x'.

Factor a trinomial.
(-3 + -2x4)(1 + -1x4) = 0

Factor a difference between two squares.
(-3 + -2x4)((1 + x2)(1 + -1x2)) = 0

Factor a difference between two squares.
(-3 + -2x4)((1 + x2)((1 + x)(1 + -1x))) = 0

Subproblem 1
Set the factor '(-3 + -2x4)' equal to zero and attempt to solve:

Simplifying
-3 + -2x4 = 0

Solving
-3 + -2x4 = 0

Move all terms containing x to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + -2x4 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -2x4 = 0 + 3
-2x4 = 0 + 3

Combine like terms: 0 + 3 = 3
-2x4 = 3

Divide each side by '-2'.
x4 = -1.5

Simplifying
x4 = -1.5

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Subproblem 2
Set the factor '(1 + x2)' equal to zero and attempt to solve:

Simplifying
1 + x2 = 0

Solving
1 + x2 = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + x2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + x2 = 0 + -1
x2 = 0 + -1

Combine like terms: 0 + -1 = -1
x2 = -1

Simplifying
x2 = -1

The solution to this equation could not be determined.

This subproblem is being ignored because a solution could not be determined.
Subproblem 3
Set the factor '(1 + x)' equal to zero and attempt to solve:

Simplifying
1 + x = 0

Solving
1 + x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + x = 0 + -1
x = 0 + -1

Combine like terms: 0 + -1 = -1
x = -1

Simplifying
x = -1
Subproblem 4
Set the factor '(1 + -1x)' equal to zero and attempt to solve:

Simplifying
1 + -1x = 0

Solving
1 + -1x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-1' to each side of the equation.
1 + -1 + -1x = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1x = 0 + -1
-1x = 0 + -1

Combine like terms: 0 + -1 = -1
-1x = -1

Divide each side by '-1'.
x = 1

Simplifying
x = 1
Solution
x = {-1, 1}