(u+2)(u-2)(u^2+4)=0

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Solution for (u+2)(u-2)(u^2+4)=0 equation:


Simplifying
(u + 2)(u + -2)(u2 + 4) = 0

Reorder the terms:
(2 + u)(u + -2)(u2 + 4) = 0

Reorder the terms:
(2 + u)(-2 + u)(u2 + 4) = 0

Reorder the terms:
(2 + u)(-2 + u)(4 + u2) = 0

Multiply (2 + u) * (-2 + u)
(2(-2 + u) + u(-2 + u))(4 + u2) = 0
((-2 * 2 + u * 2) + u(-2 + u))(4 + u2) = 0
((-4 + 2u) + u(-2 + u))(4 + u2) = 0
(-4 + 2u + (-2 * u + u * u))(4 + u2) = 0
(-4 + 2u + (-2u + u2))(4 + u2) = 0

Combine like terms: 2u + -2u = 0
(-4 + 0 + u2)(4 + u2) = 0
(-4 + u2)(4 + u2) = 0

Multiply (-4 + u2) * (4 + u2)
(-4(4 + u2) + u2(4 + u2)) = 0
((4 * -4 + u2 * -4) + u2(4 + u2)) = 0
((-16 + -4u2) + u2(4 + u2)) = 0
(-16 + -4u2 + (4 * u2 + u2 * u2)) = 0
(-16 + -4u2 + (4u2 + u4)) = 0

Combine like terms: -4u2 + 4u2 = 0
(-16 + 0 + u4) = 0
(-16 + u4) = 0

Solving
-16 + u4 = 0

Solving for variable 'u'.

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

Add '16' to each side of the equation.
-16 + 16 + u4 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + u4 = 0 + 16
u4 = 0 + 16

Combine like terms: 0 + 16 = 16
u4 = 16

Simplifying
u4 = 16

Reorder the terms:
-16 + u4 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + u4 = 0

Factor a difference between two squares.
(4 + u2)(-4 + u2) = 0

Factor a difference between two squares.
(4 + u2)((2 + u)(-2 + u)) = 0

Subproblem 1

Set the factor '(4 + u2)' equal to zero and attempt to solve: Simplifying 4 + u2 = 0 Solving 4 + u2 = 0 Move all terms containing u to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + u2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + u2 = 0 + -4 u2 = 0 + -4 Combine like terms: 0 + -4 = -4 u2 = -4 Simplifying u2 = -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 + u)' equal to zero and attempt to solve: Simplifying 2 + u = 0 Solving 2 + u = 0 Move all terms containing u to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + u = 0 + -2 Combine like terms: 2 + -2 = 0 0 + u = 0 + -2 u = 0 + -2 Combine like terms: 0 + -2 = -2 u = -2 Simplifying u = -2

Subproblem 3

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

Solution

u = {-2, 2}

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