6x^4-23x^2+21=0

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Solution for 6x^4-23x^2+21=0 equation:


Simplifying
6x4 + -23x2 + 21 = 0

Reorder the terms:
21 + -23x2 + 6x4 = 0

Solving
21 + -23x2 + 6x4 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + -2x2)(7 + -3x2) = 0

Subproblem 1

Set the factor '(3 + -2x2)' equal to zero and attempt to solve: Simplifying 3 + -2x2 = 0 Solving 3 + -2x2 = 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 + -2x2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2x2 = 0 + -3 -2x2 = 0 + -3 Combine like terms: 0 + -3 = -3 -2x2 = -3 Divide each side by '-2'. x2 = 1.5 Simplifying x2 = 1.5 Take the square root of each side: x = {-1.224744871, 1.224744871}

Subproblem 2

Set the factor '(7 + -3x2)' equal to zero and attempt to solve: Simplifying 7 + -3x2 = 0 Solving 7 + -3x2 = 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 + -3x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -3x2 = 0 + -7 -3x2 = 0 + -7 Combine like terms: 0 + -7 = -7 -3x2 = -7 Divide each side by '-3'. x2 = 2.333333333 Simplifying x2 = 2.333333333 Take the square root of each side: x = {-1.527525232, 1.527525232}

Solution

x = {-1.224744871, 1.224744871, -1.527525232, 1.527525232}

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