x^4-13x^2+22=0

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Solution for x^4-13x^2+22=0 equation:


Simplifying
x4 + -13x2 + 22 = 0

Reorder the terms:
22 + -13x2 + x4 = 0

Solving
22 + -13x2 + x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(2 + -1x2)(11 + -1x2) = 0

Subproblem 1

Set the factor '(2 + -1x2)' equal to zero and attempt to solve: Simplifying 2 + -1x2 = 0 Solving 2 + -1x2 = 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 + -1x2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x2 = 0 + -2 -1x2 = 0 + -2 Combine like terms: 0 + -2 = -2 -1x2 = -2 Divide each side by '-1'. x2 = 2 Simplifying x2 = 2 Take the square root of each side: x = {-1.414213562, 1.414213562}

Subproblem 2

Set the factor '(11 + -1x2)' equal to zero and attempt to solve: Simplifying 11 + -1x2 = 0 Solving 11 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -1x2 = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -1x2 = 0 + -11 -1x2 = 0 + -11 Combine like terms: 0 + -11 = -11 -1x2 = -11 Divide each side by '-1'. x2 = 11 Simplifying x2 = 11 Take the square root of each side: x = {-3.31662479, 3.31662479}

Solution

x = {-1.414213562, 1.414213562, -3.31662479, 3.31662479}

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