0.16=x^4

Solution for 0.16=x^4 equation:

Simplifying
0.16 = x4

Solving
0.16 = x4

Solving for variable 'x'.

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

Add '-1x4' to each side of the equation.
0.16 + -1x4 = x4 + -1x4

Combine like terms: x4 + -1x4 = 0
0.16 + -1x4 = 0

Add '-0.16' to each side of the equation.
0.16 + -0.16 + -1x4 = 0 + -0.16

Combine like terms: 0.16 + -0.16 = 0.00
0.00 + -1x4 = 0 + -0.16
-1x4 = 0 + -0.16

Combine like terms: 0 + -0.16 = -0.16
-1x4 = -0.16

Divide each side by '-1'.
x4 = 0.16

Simplifying
x4 = 0.16

Reorder the terms:
-0.16 + x4 = 0.16 + -0.16

Combine like terms: 0.16 + -0.16 = 0.00
-0.16 + x4 = 0.00

Factor a difference between two squares.
(0.4 + x2)(-0.4 + x2) = 0.00

Subproblem 1
Set the factor '(0.4 + x2)' equal to zero and attempt to solve:

Simplifying
0.4 + x2 = 0

Solving
0.4 + x2 = 0

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

Add '-0.4' to each side of the equation.
0.4 + -0.4 + x2 = 0 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + x2 = 0 + -0.4
x2 = 0 + -0.4

Combine like terms: 0 + -0.4 = -0.4
x2 = -0.4

Simplifying
x2 = -0.4

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 '(-0.4 + x2)' equal to zero and attempt to solve:

Simplifying
-0.4 + x2 = 0

Solving
-0.4 + x2 = 0

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

Add '0.4' to each side of the equation.
-0.4 + 0.4 + x2 = 0 + 0.4

Combine like terms: -0.4 + 0.4 = 0.0
0.0 + x2 = 0 + 0.4
x2 = 0 + 0.4

Combine like terms: 0 + 0.4 = 0.4
x2 = 0.4

Simplifying
x2 = 0.4

Take the square root of each side:
x = {-0.632455532, 0.632455532}
Solution
x = {-0.632455532, 0.632455532}