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Simplifying 4x2 + 12x + -185 = 0 Reorder the terms: -185 + 12x + 4x2 = 0 Solving -185 + 12x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -46.25 + 3x + x2 = 0 Move the constant term to the right: Add '46.25' to each side of the equation. -46.25 + 3x + 46.25 + x2 = 0 + 46.25 Reorder the terms: -46.25 + 46.25 + 3x + x2 = 0 + 46.25 Combine like terms: -46.25 + 46.25 = 0.00 0.00 + 3x + x2 = 0 + 46.25 3x + x2 = 0 + 46.25 Combine like terms: 0 + 46.25 = 46.25 3x + x2 = 46.25 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 = 46.25 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 46.25 + 2.25 Combine like terms: 46.25 + 2.25 = 48.5 2.25 + 3x + x2 = 48.5 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 48.5 Calculate the square root of the right side: 6.964194139 Break this problem into two subproblems by setting (x + 1.5) equal to 6.964194139 and -6.964194139.Subproblem 1
x + 1.5 = 6.964194139 Simplifying x + 1.5 = 6.964194139 Reorder the terms: 1.5 + x = 6.964194139 Solving 1.5 + x = 6.964194139 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 = 6.964194139 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 6.964194139 + -1.5 x = 6.964194139 + -1.5 Combine like terms: 6.964194139 + -1.5 = 5.464194139 x = 5.464194139 Simplifying x = 5.464194139Subproblem 2
x + 1.5 = -6.964194139 Simplifying x + 1.5 = -6.964194139 Reorder the terms: 1.5 + x = -6.964194139 Solving 1.5 + x = -6.964194139 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 = -6.964194139 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -6.964194139 + -1.5 x = -6.964194139 + -1.5 Combine like terms: -6.964194139 + -1.5 = -8.464194139 x = -8.464194139 Simplifying x = -8.464194139Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.464194139, -8.464194139}
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