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Simplifying 131 = 2x2 + -6x Reorder the terms: 131 = -6x + 2x2 Solving 131 = -6x + 2x2 Solving for variable 'x'. Reorder the terms: 131 + 6x + -2x2 = -6x + 6x + 2x2 + -2x2 Combine like terms: -6x + 6x = 0 131 + 6x + -2x2 = 0 + 2x2 + -2x2 131 + 6x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 131 + 6x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -65.5 + -3x + x2 = 0 Move the constant term to the right: Add '65.5' to each side of the equation. -65.5 + -3x + 65.5 + x2 = 0 + 65.5 Reorder the terms: -65.5 + 65.5 + -3x + x2 = 0 + 65.5 Combine like terms: -65.5 + 65.5 = 0.0 0.0 + -3x + x2 = 0 + 65.5 -3x + x2 = 0 + 65.5 Combine like terms: 0 + 65.5 = 65.5 -3x + x2 = 65.5 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = 65.5 + 2.25 Reorder the terms: 2.25 + -3x + x2 = 65.5 + 2.25 Combine like terms: 65.5 + 2.25 = 67.75 2.25 + -3x + x2 = 67.75 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 67.75 Calculate the square root of the right side: 8.231038817 Break this problem into two subproblems by setting (x + -1.5) equal to 8.231038817 and -8.231038817.Subproblem 1
x + -1.5 = 8.231038817 Simplifying x + -1.5 = 8.231038817 Reorder the terms: -1.5 + x = 8.231038817 Solving -1.5 + x = 8.231038817 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 8.231038817 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 8.231038817 + 1.5 x = 8.231038817 + 1.5 Combine like terms: 8.231038817 + 1.5 = 9.731038817 x = 9.731038817 Simplifying x = 9.731038817Subproblem 2
x + -1.5 = -8.231038817 Simplifying x + -1.5 = -8.231038817 Reorder the terms: -1.5 + x = -8.231038817 Solving -1.5 + x = -8.231038817 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -8.231038817 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -8.231038817 + 1.5 x = -8.231038817 + 1.5 Combine like terms: -8.231038817 + 1.5 = -6.731038817 x = -6.731038817 Simplifying x = -6.731038817Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.731038817, -6.731038817}
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