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Simplifying 2x2 + -2x + -90 = 0 Reorder the terms: -90 + -2x + 2x2 = 0 Solving -90 + -2x + 2x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(-45 + -1x + x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-45 + -1x + x2)' equal to zero and attempt to solve: Simplifying -45 + -1x + x2 = 0 Solving -45 + -1x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '45' to each side of the equation. -45 + -1x + 45 + x2 = 0 + 45 Reorder the terms: -45 + 45 + -1x + x2 = 0 + 45 Combine like terms: -45 + 45 = 0 0 + -1x + x2 = 0 + 45 -1x + x2 = 0 + 45 Combine like terms: 0 + 45 = 45 -1x + x2 = 45 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = 45 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 45 + 0.25 Combine like terms: 45 + 0.25 = 45.25 0.25 + -1x + x2 = 45.25 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 45.25 Calculate the square root of the right side: 6.726812024 Break this problem into two subproblems by setting (x + -0.5) equal to 6.726812024 and -6.726812024.Subproblem 1
x + -0.5 = 6.726812024 Simplifying x + -0.5 = 6.726812024 Reorder the terms: -0.5 + x = 6.726812024 Solving -0.5 + x = 6.726812024 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 6.726812024 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 6.726812024 + 0.5 x = 6.726812024 + 0.5 Combine like terms: 6.726812024 + 0.5 = 7.226812024 x = 7.226812024 Simplifying x = 7.226812024Subproblem 2
x + -0.5 = -6.726812024 Simplifying x + -0.5 = -6.726812024 Reorder the terms: -0.5 + x = -6.726812024 Solving -0.5 + x = -6.726812024 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -6.726812024 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -6.726812024 + 0.5 x = -6.726812024 + 0.5 Combine like terms: -6.726812024 + 0.5 = -6.226812024 x = -6.226812024 Simplifying x = -6.226812024Solution
The solution to the problem is based on the solutions from the subproblems. x = {7.226812024, -6.226812024}Solution
x = {7.226812024, -6.226812024}
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