a^4-256=0

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Solution for a^4-256=0 equation:


Simplifying
a4 + -256 = 0

Reorder the terms:
-256 + a4 = 0

Solving
-256 + a4 = 0

Solving for variable 'a'.

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

Add '256' to each side of the equation.
-256 + 256 + a4 = 0 + 256

Combine like terms: -256 + 256 = 0
0 + a4 = 0 + 256
a4 = 0 + 256

Combine like terms: 0 + 256 = 256
a4 = 256

Simplifying
a4 = 256

Reorder the terms:
-256 + a4 = 256 + -256

Combine like terms: 256 + -256 = 0
-256 + a4 = 0

Factor a difference between two squares.
(16 + a2)(-16 + a2) = 0

Factor a difference between two squares.
(16 + a2)((4 + a)(-4 + a)) = 0

Subproblem 1

Set the factor '(16 + a2)' equal to zero and attempt to solve: Simplifying 16 + a2 = 0 Solving 16 + a2 = 0 Move all terms containing a to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + a2 = 0 + -16 Combine like terms: 16 + -16 = 0 0 + a2 = 0 + -16 a2 = 0 + -16 Combine like terms: 0 + -16 = -16 a2 = -16 Simplifying a2 = -16 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 '(4 + a)' equal to zero and attempt to solve: Simplifying 4 + a = 0 Solving 4 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + a = 0 + -4 a = 0 + -4 Combine like terms: 0 + -4 = -4 a = -4 Simplifying a = -4

Subproblem 3

Set the factor '(-4 + a)' equal to zero and attempt to solve: Simplifying -4 + a = 0 Solving -4 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + a = 0 + 4 Combine like terms: -4 + 4 = 0 0 + a = 0 + 4 a = 0 + 4 Combine like terms: 0 + 4 = 4 a = 4 Simplifying a = 4

Solution

a = {-4, 4}

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