y^4-256=

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Solution for y^4-256= equation:


Simplifying
y4 + -256 = 0

Reorder the terms:
-256 + y4 = 0

Solving
-256 + y4 = 0

Solving for variable 'y'.

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

Add '256' to each side of the equation.
-256 + 256 + y4 = 0 + 256

Combine like terms: -256 + 256 = 0
0 + y4 = 0 + 256
y4 = 0 + 256

Combine like terms: 0 + 256 = 256
y4 = 256

Simplifying
y4 = 256

Reorder the terms:
-256 + y4 = 256 + -256

Combine like terms: 256 + -256 = 0
-256 + y4 = 0

Factor a difference between two squares.
(16 + y2)(-16 + y2) = 0

Factor a difference between two squares.
(16 + y2)((4 + y)(-4 + y)) = 0

Subproblem 1

Set the factor '(16 + y2)' equal to zero and attempt to solve: Simplifying 16 + y2 = 0 Solving 16 + y2 = 0 Move all terms containing y to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + y2 = 0 + -16 Combine like terms: 16 + -16 = 0 0 + y2 = 0 + -16 y2 = 0 + -16 Combine like terms: 0 + -16 = -16 y2 = -16 Simplifying y2 = -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 + y)' equal to zero and attempt to solve: Simplifying 4 + y = 0 Solving 4 + y = 0 Move all terms containing y to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + y = 0 + -4 Combine like terms: 4 + -4 = 0 0 + y = 0 + -4 y = 0 + -4 Combine like terms: 0 + -4 = -4 y = -4 Simplifying y = -4

Subproblem 3

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

Solution

y = {-4, 4}

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