(x^2+5)(x^2-5)=56

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Solution for (x^2+5)(x^2-5)=56 equation:


Simplifying
(x2 + 5)(x2 + -5) = 56

Reorder the terms:
(5 + x2)(x2 + -5) = 56

Reorder the terms:
(5 + x2)(-5 + x2) = 56

Multiply (5 + x2) * (-5 + x2)
(5(-5 + x2) + x2(-5 + x2)) = 56
((-5 * 5 + x2 * 5) + x2(-5 + x2)) = 56
((-25 + 5x2) + x2(-5 + x2)) = 56
(-25 + 5x2 + (-5 * x2 + x2 * x2)) = 56
(-25 + 5x2 + (-5x2 + x4)) = 56

Combine like terms: 5x2 + -5x2 = 0
(-25 + 0 + x4) = 56
(-25 + x4) = 56

Solving
-25 + x4 = 56

Solving for variable 'x'.

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

Add '25' to each side of the equation.
-25 + 25 + x4 = 56 + 25

Combine like terms: -25 + 25 = 0
0 + x4 = 56 + 25
x4 = 56 + 25

Combine like terms: 56 + 25 = 81
x4 = 81

Simplifying
x4 = 81

Reorder the terms:
-81 + x4 = 81 + -81

Combine like terms: 81 + -81 = 0
-81 + x4 = 0

Factor a difference between two squares.
(9 + x2)(-9 + x2) = 0

Factor a difference between two squares.
(9 + x2)((3 + x)(-3 + x)) = 0

Subproblem 1

Set the factor '(9 + x2)' equal to zero and attempt to solve: Simplifying 9 + x2 = 0 Solving 9 + x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + x2 = 0 + -9 x2 = 0 + -9 Combine like terms: 0 + -9 = -9 x2 = -9 Simplifying x2 = -9 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 '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

Subproblem 3

Set the factor '(-3 + x)' equal to zero and attempt to solve: Simplifying -3 + x = 0 Solving -3 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + x = 0 + 3 x = 0 + 3 Combine like terms: 0 + 3 = 3 x = 3 Simplifying x = 3

Solution

x = {-3, 3}

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