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Simplifying 2x4 + -5x2 + -1 = 0 Reorder the terms: -1 + -5x2 + 2x4 = 0 Solving -1 + -5x2 + 2x4 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -0.5 + -2.5x2 + x4 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + -2.5x2 + 0.5 + x4 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + -2.5x2 + x4 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + -2.5x2 + x4 = 0 + 0.5 -2.5x2 + x4 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 -2.5x2 + x4 = 0.5 The x term is -2.5x2. Take half its coefficient (-1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. -2.5x2 + 1.5625 + x4 = 0.5 + 1.5625 Reorder the terms: 1.5625 + -2.5x2 + x4 = 0.5 + 1.5625 Combine like terms: 0.5 + 1.5625 = 2.0625 1.5625 + -2.5x2 + x4 = 2.0625 Factor a perfect square on the left side: (x2 + -1.25)(x2 + -1.25) = 2.0625 Calculate the square root of the right side: 1.436140662 Break this problem into two subproblems by setting (x2 + -1.25) equal to 1.436140662 and -1.436140662.Subproblem 1
x2 + -1.25 = 1.436140662 Simplifying x2 + -1.25 = 1.436140662 Reorder the terms: -1.25 + x2 = 1.436140662 Solving -1.25 + x2 = 1.436140662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x2 = 1.436140662 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x2 = 1.436140662 + 1.25 x2 = 1.436140662 + 1.25 Combine like terms: 1.436140662 + 1.25 = 2.686140662 x2 = 2.686140662 Simplifying x2 = 2.686140662 Take the square root of each side: x = {-1.638944984, 1.638944984}Subproblem 2
x2 + -1.25 = -1.436140662 Simplifying x2 + -1.25 = -1.436140662 Reorder the terms: -1.25 + x2 = -1.436140662 Solving -1.25 + x2 = -1.436140662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x2 = -1.436140662 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x2 = -1.436140662 + 1.25 x2 = -1.436140662 + 1.25 Combine like terms: -1.436140662 + 1.25 = -0.186140662 x2 = -0.186140662 Simplifying x2 = -0.186140662 Reorder the terms: 0.186140662 + x2 = -0.186140662 + 0.186140662 Combine like terms: -0.186140662 + 0.186140662 = 0.000000000 0.186140662 + 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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