3x^4-7x^2=-2

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Solution for 3x^4-7x^2=-2 equation:


Simplifying
3x4 + -7x2 = -2

Reorder the terms:
-7x2 + 3x4 = -2

Solving
-7x2 + 3x4 = -2

Solving for variable 'x'.

Reorder the terms:
2 + -7x2 + 3x4 = -2 + 2

Combine like terms: -2 + 2 = 0
2 + -7x2 + 3x4 = 0

Factor a trinomial.
(1 + -3x2)(2 + -1x2) = 0

Subproblem 1

Set the factor '(1 + -3x2)' equal to zero and attempt to solve: Simplifying 1 + -3x2 = 0 Solving 1 + -3x2 = 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 + -3x2 = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -3x2 = 0 + -1 -3x2 = 0 + -1 Combine like terms: 0 + -1 = -1 -3x2 = -1 Divide each side by '-3'. x2 = 0.3333333333 Simplifying x2 = 0.3333333333 Take the square root of each side: x = {-0.577350269, 0.577350269}

Subproblem 2

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}

Solution

x = {-0.577350269, 0.577350269, -1.414213562, 1.414213562}

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