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Simplifying 4x4 = 13x2 + 9 Reorder the terms: 4x4 = 9 + 13x2 Solving 4x4 = 9 + 13x2 Solving for variable 'x'. Reorder the terms: -9 + -13x2 + 4x4 = 9 + 13x2 + -9 + -13x2 Reorder the terms: -9 + -13x2 + 4x4 = 9 + -9 + 13x2 + -13x2 Combine like terms: 9 + -9 = 0 -9 + -13x2 + 4x4 = 0 + 13x2 + -13x2 -9 + -13x2 + 4x4 = 13x2 + -13x2 Combine like terms: 13x2 + -13x2 = 0 -9 + -13x2 + 4x4 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -2.25 + -3.25x2 + x4 = 0 Move the constant term to the right: Add '2.25' to each side of the equation. -2.25 + -3.25x2 + 2.25 + x4 = 0 + 2.25 Reorder the terms: -2.25 + 2.25 + -3.25x2 + x4 = 0 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + -3.25x2 + x4 = 0 + 2.25 -3.25x2 + x4 = 0 + 2.25 Combine like terms: 0 + 2.25 = 2.25 -3.25x2 + x4 = 2.25 The x term is -3.25x2. Take half its coefficient (-1.625). Square it (2.640625) and add it to both sides. Add '2.640625' to each side of the equation. -3.25x2 + 2.640625 + x4 = 2.25 + 2.640625 Reorder the terms: 2.640625 + -3.25x2 + x4 = 2.25 + 2.640625 Combine like terms: 2.25 + 2.640625 = 4.890625 2.640625 + -3.25x2 + x4 = 4.890625 Factor a perfect square on the left side: (x2 + -1.625)(x2 + -1.625) = 4.890625 Calculate the square root of the right side: 2.211475752 Break this problem into two subproblems by setting (x2 + -1.625) equal to 2.211475752 and -2.211475752.Subproblem 1
x2 + -1.625 = 2.211475752 Simplifying x2 + -1.625 = 2.211475752 Reorder the terms: -1.625 + x2 = 2.211475752 Solving -1.625 + x2 = 2.211475752 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.625' to each side of the equation. -1.625 + 1.625 + x2 = 2.211475752 + 1.625 Combine like terms: -1.625 + 1.625 = 0.000 0.000 + x2 = 2.211475752 + 1.625 x2 = 2.211475752 + 1.625 Combine like terms: 2.211475752 + 1.625 = 3.836475752 x2 = 3.836475752 Simplifying x2 = 3.836475752 Take the square root of each side: x = {-1.958692358, 1.958692358}Subproblem 2
x2 + -1.625 = -2.211475752 Simplifying x2 + -1.625 = -2.211475752 Reorder the terms: -1.625 + x2 = -2.211475752 Solving -1.625 + x2 = -2.211475752 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.625' to each side of the equation. -1.625 + 1.625 + x2 = -2.211475752 + 1.625 Combine like terms: -1.625 + 1.625 = 0.000 0.000 + x2 = -2.211475752 + 1.625 x2 = -2.211475752 + 1.625 Combine like terms: -2.211475752 + 1.625 = -0.586475752 x2 = -0.586475752 Simplifying x2 = -0.586475752 Reorder the terms: 0.586475752 + x2 = -0.586475752 + 0.586475752 Combine like terms: -0.586475752 + 0.586475752 = 0.000000000 0.586475752 + 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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