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Simplifying 0 = 4x2 + 5x + -119 Reorder the terms: 0 = -119 + 5x + 4x2 Solving 0 = -119 + 5x + 4x2 Solving for variable 'x'. Combine like terms: 0 + 119 = 119 119 + -5x + -4x2 = -119 + 5x + 4x2 + 119 + -5x + -4x2 Reorder the terms: 119 + -5x + -4x2 = -119 + 119 + 5x + -5x + 4x2 + -4x2 Combine like terms: -119 + 119 = 0 119 + -5x + -4x2 = 0 + 5x + -5x + 4x2 + -4x2 119 + -5x + -4x2 = 5x + -5x + 4x2 + -4x2 Combine like terms: 5x + -5x = 0 119 + -5x + -4x2 = 0 + 4x2 + -4x2 119 + -5x + -4x2 = 4x2 + -4x2 Combine like terms: 4x2 + -4x2 = 0 119 + -5x + -4x2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -29.75 + 1.25x + x2 = 0 Move the constant term to the right: Add '29.75' to each side of the equation. -29.75 + 1.25x + 29.75 + x2 = 0 + 29.75 Reorder the terms: -29.75 + 29.75 + 1.25x + x2 = 0 + 29.75 Combine like terms: -29.75 + 29.75 = 0.00 0.00 + 1.25x + x2 = 0 + 29.75 1.25x + x2 = 0 + 29.75 Combine like terms: 0 + 29.75 = 29.75 1.25x + x2 = 29.75 The x term is 1.25x. Take half its coefficient (0.625). Square it (0.390625) and add it to both sides. Add '0.390625' to each side of the equation. 1.25x + 0.390625 + x2 = 29.75 + 0.390625 Reorder the terms: 0.390625 + 1.25x + x2 = 29.75 + 0.390625 Combine like terms: 29.75 + 0.390625 = 30.140625 0.390625 + 1.25x + x2 = 30.140625 Factor a perfect square on the left side: (x + 0.625)(x + 0.625) = 30.140625 Calculate the square root of the right side: 5.490047814 Break this problem into two subproblems by setting (x + 0.625) equal to 5.490047814 and -5.490047814.Subproblem 1
x + 0.625 = 5.490047814 Simplifying x + 0.625 = 5.490047814 Reorder the terms: 0.625 + x = 5.490047814 Solving 0.625 + x = 5.490047814 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = 5.490047814 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = 5.490047814 + -0.625 x = 5.490047814 + -0.625 Combine like terms: 5.490047814 + -0.625 = 4.865047814 x = 4.865047814 Simplifying x = 4.865047814Subproblem 2
x + 0.625 = -5.490047814 Simplifying x + 0.625 = -5.490047814 Reorder the terms: 0.625 + x = -5.490047814 Solving 0.625 + x = -5.490047814 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.625' to each side of the equation. 0.625 + -0.625 + x = -5.490047814 + -0.625 Combine like terms: 0.625 + -0.625 = 0.000 0.000 + x = -5.490047814 + -0.625 x = -5.490047814 + -0.625 Combine like terms: -5.490047814 + -0.625 = -6.115047814 x = -6.115047814 Simplifying x = -6.115047814Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.865047814, -6.115047814}
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