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Simplifying 5x2 + 6x + -5.5 = 0 Reorder the terms: -5.5 + 6x + 5x2 = 0 Solving -5.5 + 6x + 5x2 = 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'. -1.1 + 1.2x + x2 = 0 Move the constant term to the right: Add '1.1' to each side of the equation. -1.1 + 1.2x + 1.1 + x2 = 0 + 1.1 Reorder the terms: -1.1 + 1.1 + 1.2x + x2 = 0 + 1.1 Combine like terms: -1.1 + 1.1 = 0.0 0.0 + 1.2x + x2 = 0 + 1.1 1.2x + x2 = 0 + 1.1 Combine like terms: 0 + 1.1 = 1.1 1.2x + x2 = 1.1 The x term is 1.2x. Take half its coefficient (0.6). Square it (0.36) and add it to both sides. Add '0.36' to each side of the equation. 1.2x + 0.36 + x2 = 1.1 + 0.36 Reorder the terms: 0.36 + 1.2x + x2 = 1.1 + 0.36 Combine like terms: 1.1 + 0.36 = 1.46 0.36 + 1.2x + x2 = 1.46 Factor a perfect square on the left side: (x + 0.6)(x + 0.6) = 1.46 Calculate the square root of the right side: 1.208304597 Break this problem into two subproblems by setting (x + 0.6) equal to 1.208304597 and -1.208304597.Subproblem 1
x + 0.6 = 1.208304597 Simplifying x + 0.6 = 1.208304597 Reorder the terms: 0.6 + x = 1.208304597 Solving 0.6 + x = 1.208304597 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = 1.208304597 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = 1.208304597 + -0.6 x = 1.208304597 + -0.6 Combine like terms: 1.208304597 + -0.6 = 0.608304597 x = 0.608304597 Simplifying x = 0.608304597Subproblem 2
x + 0.6 = -1.208304597 Simplifying x + 0.6 = -1.208304597 Reorder the terms: 0.6 + x = -1.208304597 Solving 0.6 + x = -1.208304597 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.6' to each side of the equation. 0.6 + -0.6 + x = -1.208304597 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + x = -1.208304597 + -0.6 x = -1.208304597 + -0.6 Combine like terms: -1.208304597 + -0.6 = -1.808304597 x = -1.808304597 Simplifying x = -1.808304597Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.608304597, -1.808304597}
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