x^4-3x^2-12=6

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Solution for x^4-3x^2-12=6 equation:


Simplifying
x4 + -3x2 + -12 = 6

Reorder the terms:
-12 + -3x2 + x4 = 6

Solving
-12 + -3x2 + x4 = 6

Solving for variable 'x'.

Reorder the terms:
-12 + -6 + -3x2 + x4 = 6 + -6

Combine like terms: -12 + -6 = -18
-18 + -3x2 + x4 = 6 + -6

Combine like terms: 6 + -6 = 0
-18 + -3x2 + x4 = 0

Factor a trinomial.
(-3 + -1x2)(6 + -1x2) = 0

Subproblem 1

Set the factor '(-3 + -1x2)' equal to zero and attempt to solve: Simplifying -3 + -1x2 = 0 Solving -3 + -1x2 = 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 + -1x2 = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1x2 = 0 + 3 -1x2 = 0 + 3 Combine like terms: 0 + 3 = 3 -1x2 = 3 Divide each side by '-1'. x2 = -3 Simplifying x2 = -3 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 '(6 + -1x2)' equal to zero and attempt to solve: Simplifying 6 + -1x2 = 0 Solving 6 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1x2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1x2 = 0 + -6 -1x2 = 0 + -6 Combine like terms: 0 + -6 = -6 -1x2 = -6 Divide each side by '-1'. x2 = 6 Simplifying x2 = 6 Take the square root of each side: x = {-2.449489743, 2.449489743}

Solution

x = {-2.449489743, 2.449489743}

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