(1-y^4)(1+y^4)=

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Solution for (1-y^4)(1+y^4)= equation: 


Simplifying
(1 + -1y4)(1 + y4) = 0

Multiply (1 + -1y4) * (1 + y4)
(1(1 + y4) + -1y4 * (1 + y4)) = 0
((1 * 1 + y4 * 1) + -1y4 * (1 + y4)) = 0
((1 + 1y4) + -1y4 * (1 + y4)) = 0
(1 + 1y4 + (1 * -1y4 + y4 * -1y4)) = 0
(1 + 1y4 + (-1y4 + -1y8)) = 0

Combine like terms: 1y4 + -1y4 = 0
(1 + 0 + -1y8) = 0
(1 + -1y8) = 0

Solving
1 + -1y8 = 0

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + -1y8 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -1y8 = 0 + -1
-1y8 = 0 + -1

Combine like terms: 0 + -1 = -1
-1y8 = -1

Divide each side by '-1'.
y8 = 1

Simplifying
y8 = 1

Reorder the terms:
-1 + y8 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + y8 = 0

Factor a difference between two squares.
(1 + y4)(-1 + y4) = 0

Factor a difference between two squares.
(1 + y4)((1 + y2)(-1 + y2)) = 0

Factor a difference between two squares.
(1 + y4)((1 + y2)((1 + y)(-1 + y))) = 0


Subproblem 1
Set the factor '(1 + y4)' equal to zero and attempt to solve:

Simplifying
1 + y4 = 0

Solving
1 + y4 = 0

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

Add '-1' to each side of the equation.
1 + -1 + y4 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + y4 = 0 + -1
y4 = 0 + -1

Combine like terms: 0 + -1 = -1
y4 = -1

Simplifying
y4 = -1

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 + y2)' equal to zero and attempt to solve:

Simplifying
1 + y2 = 0

Solving
1 + y2 = 0

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

Add '-1' to each side of the equation.
1 + -1 + y2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + y2 = 0 + -1
y2 = 0 + -1

Combine like terms: 0 + -1 = -1
y2 = -1

Simplifying
y2 = -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 + y)' equal to zero and attempt to solve:

Simplifying
1 + y = 0

Solving
1 + y = 0

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

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

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

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

Simplifying
y = -1

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

Simplifying
-1 + y = 0

Solving
-1 + y = 0

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

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

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

Combine like terms: 0 + 1 = 1
y = 1

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

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