2x^4+9x^2=5

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Solution for 2x^4+9x^2=5 equation:


Simplifying
2x4 + 9x2 = 5

Reorder the terms:
9x2 + 2x4 = 5

Solving
9x2 + 2x4 = 5

Solving for variable 'x'.

Reorder the terms:
-5 + 9x2 + 2x4 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + 9x2 + 2x4 = 0

Factor a trinomial.
(-5 + -1x2)(1 + -2x2) = 0

Subproblem 1

Set the factor '(-5 + -1x2)' equal to zero and attempt to solve: Simplifying -5 + -1x2 = 0 Solving -5 + -1x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x2 = 0 + 5 -1x2 = 0 + 5 Combine like terms: 0 + 5 = 5 -1x2 = 5 Divide each side by '-1'. x2 = -5 Simplifying x2 = -5 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 '(1 + -2x2)' equal to zero and attempt to solve: Simplifying 1 + -2x2 = 0 Solving 1 + -2x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -2x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -2x2 = 0 + -1 -2x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -2x2 = -1 Divide each side by '-2'. x2 = 0.5 Simplifying x2 = 0.5 Take the square root of each side: x = {-0.707106781, 0.707106781}

Solution

x = {-0.707106781, 0.707106781}

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