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Simplifying x4 + -6x2 = -4 Reorder the terms: -6x2 + x4 = -4 Solving -6x2 + x4 = -4 Solving for variable 'x'. Reorder the terms: 4 + -6x2 + x4 = -4 + 4 Combine like terms: -4 + 4 = 0 4 + -6x2 + x4 = 0 Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + -6x2 + -4 + x4 = 0 + -4 Reorder the terms: 4 + -4 + -6x2 + x4 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -6x2 + x4 = 0 + -4 -6x2 + x4 = 0 + -4 Combine like terms: 0 + -4 = -4 -6x2 + x4 = -4 The x term is -6x2. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x2 + 9 + x4 = -4 + 9 Reorder the terms: 9 + -6x2 + x4 = -4 + 9 Combine like terms: -4 + 9 = 5 9 + -6x2 + x4 = 5 Factor a perfect square on the left side: (x2 + -3)(x2 + -3) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (x2 + -3) equal to 2.236067978 and -2.236067978.Subproblem 1
x2 + -3 = 2.236067978 Simplifying x2 + -3 = 2.236067978 Reorder the terms: -3 + x2 = 2.236067978 Solving -3 + x2 = 2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x2 = 2.236067978 + 3 Combine like terms: -3 + 3 = 0 0 + x2 = 2.236067978 + 3 x2 = 2.236067978 + 3 Combine like terms: 2.236067978 + 3 = 5.236067978 x2 = 5.236067978 Simplifying x2 = 5.236067978 Take the square root of each side: x = {-2.288245611, 2.288245611}Subproblem 2
x2 + -3 = -2.236067978 Simplifying x2 + -3 = -2.236067978 Reorder the terms: -3 + x2 = -2.236067978 Solving -3 + x2 = -2.236067978 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x2 = -2.236067978 + 3 Combine like terms: -3 + 3 = 0 0 + x2 = -2.236067978 + 3 x2 = -2.236067978 + 3 Combine like terms: -2.236067978 + 3 = 0.763932022 x2 = 0.763932022 Simplifying x2 = 0.763932022 Take the square root of each side: x = {-0.874032049, 0.874032049}Solution
The solution to the problem is based on the solutions from the subproblems. x = {-2.288245611, 2.288245611, -0.874032049, 0.874032049}
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