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Simplifying 5x4 + -18x2 + -3 = 0 Reorder the terms: -3 + -18x2 + 5x4 = 0 Solving -3 + -18x2 + 5x4 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -0.6 + -3.6x2 + x4 = 0 Move the constant term to the right: Add '0.6' to each side of the equation. -0.6 + -3.6x2 + 0.6 + x4 = 0 + 0.6 Reorder the terms: -0.6 + 0.6 + -3.6x2 + x4 = 0 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + -3.6x2 + x4 = 0 + 0.6 -3.6x2 + x4 = 0 + 0.6 Combine like terms: 0 + 0.6 = 0.6 -3.6x2 + x4 = 0.6 The x term is -3.6x2. Take half its coefficient (-1.8). Square it (3.24) and add it to both sides. Add '3.24' to each side of the equation. -3.6x2 + 3.24 + x4 = 0.6 + 3.24 Reorder the terms: 3.24 + -3.6x2 + x4 = 0.6 + 3.24 Combine like terms: 0.6 + 3.24 = 3.84 3.24 + -3.6x2 + x4 = 3.84 Factor a perfect square on the left side: (x2 + -1.8)(x2 + -1.8) = 3.84 Calculate the square root of the right side: 1.959591794 Break this problem into two subproblems by setting (x2 + -1.8) equal to 1.959591794 and -1.959591794.Subproblem 1
x2 + -1.8 = 1.959591794 Simplifying x2 + -1.8 = 1.959591794 Reorder the terms: -1.8 + x2 = 1.959591794 Solving -1.8 + x2 = 1.959591794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8' to each side of the equation. -1.8 + 1.8 + x2 = 1.959591794 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + x2 = 1.959591794 + 1.8 x2 = 1.959591794 + 1.8 Combine like terms: 1.959591794 + 1.8 = 3.759591794 x2 = 3.759591794 Simplifying x2 = 3.759591794 Take the square root of each side: x = {-1.938966682, 1.938966682}Subproblem 2
x2 + -1.8 = -1.959591794 Simplifying x2 + -1.8 = -1.959591794 Reorder the terms: -1.8 + x2 = -1.959591794 Solving -1.8 + x2 = -1.959591794 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.8' to each side of the equation. -1.8 + 1.8 + x2 = -1.959591794 + 1.8 Combine like terms: -1.8 + 1.8 = 0.0 0.0 + x2 = -1.959591794 + 1.8 x2 = -1.959591794 + 1.8 Combine like terms: -1.959591794 + 1.8 = -0.159591794 x2 = -0.159591794 Simplifying x2 = -0.159591794 Reorder the terms: 0.159591794 + x2 = -0.159591794 + 0.159591794 Combine like terms: -0.159591794 + 0.159591794 = 0.000000000 0.159591794 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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