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Simplifying 3x4 + -31x2 + 28 = 0 Reorder the terms: 28 + -31x2 + 3x4 = 0 Solving 28 + -31x2 + 3x4 = 0 Solving for variable 'x'. Factor a trinomial. (1 + -1x2)(28 + -3x2) = 0 Factor a difference between two squares. ((1 + x)(1 + -1x))(28 + -3x2) = 0Subproblem 1
Set the factor '(28 + -3x2)' equal to zero and attempt to solve: Simplifying 28 + -3x2 = 0 Solving 28 + -3x2 = 0 Move all terms containing x to the left, all other terms to the right. Add '-28' to each side of the equation. 28 + -28 + -3x2 = 0 + -28 Combine like terms: 28 + -28 = 0 0 + -3x2 = 0 + -28 -3x2 = 0 + -28 Combine like terms: 0 + -28 = -28 -3x2 = -28 Divide each side by '-3'. x2 = 9.333333333 Simplifying x2 = 9.333333333 Take the square root of each side: x = {-3.055050463, 3.055050463}Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Subproblem 3
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 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 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Solution
x = {-3.055050463, 3.055050463, -1, 1}
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