4x^4-36x^2=448

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Solution for 4x^4-36x^2=448 equation:


Simplifying
4x4 + -36x2 = 448

Reorder the terms:
-36x2 + 4x4 = 448

Solving
-36x2 + 4x4 = 448

Solving for variable 'x'.

Reorder the terms:
-448 + -36x2 + 4x4 = 448 + -448

Combine like terms: 448 + -448 = 0
-448 + -36x2 + 4x4 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-112 + -9x2 + x4) = 0

Factor a trinomial.
4((-7 + -1x2)(16 + -1x2)) = 0

Factor a difference between two squares.
4((-7 + -1x2)((4 + x)(4 + -1x))) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-7 + -1x2)' equal to zero and attempt to solve: Simplifying -7 + -1x2 = 0 Solving -7 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x2 = 0 + 7 -1x2 = 0 + 7 Combine like terms: 0 + 7 = 7 -1x2 = 7 Divide each side by '-1'. x2 = -7 Simplifying x2 = -7 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 + x)' equal to zero and attempt to solve: Simplifying 4 + x = 0 Solving 4 + x = 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 + x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + x = 0 + -4 x = 0 + -4 Combine like terms: 0 + -4 = -4 x = -4 Simplifying x = -4

Subproblem 3

Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 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 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4

Solution

x = {-4, 4}

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