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Simplifying x2 + 3x + -16 = 48 Reorder the terms: -16 + 3x + x2 = 48 Solving -16 + 3x + x2 = 48 Solving for variable 'x'. Reorder the terms: -16 + -48 + 3x + x2 = 48 + -48 Combine like terms: -16 + -48 = -64 -64 + 3x + x2 = 48 + -48 Combine like terms: 48 + -48 = 0 -64 + 3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '64' to each side of the equation. -64 + 3x + 64 + x2 = 0 + 64 Reorder the terms: -64 + 64 + 3x + x2 = 0 + 64 Combine like terms: -64 + 64 = 0 0 + 3x + x2 = 0 + 64 3x + x2 = 0 + 64 Combine like terms: 0 + 64 = 64 3x + x2 = 64 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 = 64 + 2.25 Reorder the terms: 2.25 + 3x + x2 = 64 + 2.25 Combine like terms: 64 + 2.25 = 66.25 2.25 + 3x + x2 = 66.25 Factor a perfect square on the left side: (x + 1.5)(x + 1.5) = 66.25 Calculate the square root of the right side: 8.139410298 Break this problem into two subproblems by setting (x + 1.5) equal to 8.139410298 and -8.139410298.Subproblem 1
x + 1.5 = 8.139410298 Simplifying x + 1.5 = 8.139410298 Reorder the terms: 1.5 + x = 8.139410298 Solving 1.5 + x = 8.139410298 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 = 8.139410298 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 8.139410298 + -1.5 x = 8.139410298 + -1.5 Combine like terms: 8.139410298 + -1.5 = 6.639410298 x = 6.639410298 Simplifying x = 6.639410298Subproblem 2
x + 1.5 = -8.139410298 Simplifying x + 1.5 = -8.139410298 Reorder the terms: 1.5 + x = -8.139410298 Solving 1.5 + x = -8.139410298 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 = -8.139410298 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -8.139410298 + -1.5 x = -8.139410298 + -1.5 Combine like terms: -8.139410298 + -1.5 = -9.639410298 x = -9.639410298 Simplifying x = -9.639410298Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.639410298, -9.639410298}
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