(x^2+4)*(x^2-4)=

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Solution for (x^2+4)*(x^2-4)= equation:


Simplifying
(x2 + 4)(x2 + -4) = 0

Reorder the terms:
(4 + x2)(x2 + -4) = 0

Reorder the terms:
(4 + x2)(-4 + x2) = 0

Multiply (4 + x2) * (-4 + x2)
(4(-4 + x2) + x2(-4 + x2)) = 0
((-4 * 4 + x2 * 4) + x2(-4 + x2)) = 0
((-16 + 4x2) + x2(-4 + x2)) = 0
(-16 + 4x2 + (-4 * x2 + x2 * x2)) = 0
(-16 + 4x2 + (-4x2 + x4)) = 0

Combine like terms: 4x2 + -4x2 = 0
(-16 + 0 + x4) = 0
(-16 + x4) = 0

Solving
-16 + x4 = 0

Solving for variable 'x'.

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

Add '16' to each side of the equation.
-16 + 16 + x4 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + x4 = 0 + 16
x4 = 0 + 16

Combine like terms: 0 + 16 = 16
x4 = 16

Simplifying
x4 = 16

Reorder the terms:
-16 + x4 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + x4 = 0

Factor a difference between two squares.
(4 + x2)(-4 + x2) = 0

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

Subproblem 1

Set the factor '(4 + x2)' equal to zero and attempt to solve: Simplifying 4 + x2 = 0 Solving 4 + x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x2 = 0 + -4 x2 = 0 + -4 Combine like terms: 0 + -4 = -4 x2 = -4 Simplifying x2 = -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 '(2 + x)' equal to zero and attempt to solve: Simplifying 2 + x = 0 Solving 2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + x = 0 + -2 x = 0 + -2 Combine like terms: 0 + -2 = -2 x = -2 Simplifying x = -2

Subproblem 3

Set the factor '(-2 + x)' equal to zero and attempt to solve: Simplifying -2 + x = 0 Solving -2 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 0 + 2 Combine like terms: -2 + 2 = 0 0 + x = 0 + 2 x = 0 + 2 Combine like terms: 0 + 2 = 2 x = 2 Simplifying x = 2

Solution

x = {-2, 2}

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