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Simplifying 3x + -2(2x + -5) = 2x(x + 3) + -8 Reorder the terms: 3x + -2(-5 + 2x) = 2x(x + 3) + -8 3x + (-5 * -2 + 2x * -2) = 2x(x + 3) + -8 3x + (10 + -4x) = 2x(x + 3) + -8 Reorder the terms: 10 + 3x + -4x = 2x(x + 3) + -8 Combine like terms: 3x + -4x = -1x 10 + -1x = 2x(x + 3) + -8 Reorder the terms: 10 + -1x = 2x(3 + x) + -8 10 + -1x = (3 * 2x + x * 2x) + -8 10 + -1x = (6x + 2x2) + -8 Reorder the terms: 10 + -1x = -8 + 6x + 2x2 Solving 10 + -1x = -8 + 6x + 2x2 Solving for variable 'x'. Reorder the terms: 10 + 8 + -1x + -6x + -2x2 = -8 + 6x + 2x2 + 8 + -6x + -2x2 Combine like terms: 10 + 8 = 18 18 + -1x + -6x + -2x2 = -8 + 6x + 2x2 + 8 + -6x + -2x2 Combine like terms: -1x + -6x = -7x 18 + -7x + -2x2 = -8 + 6x + 2x2 + 8 + -6x + -2x2 Reorder the terms: 18 + -7x + -2x2 = -8 + 8 + 6x + -6x + 2x2 + -2x2 Combine like terms: -8 + 8 = 0 18 + -7x + -2x2 = 0 + 6x + -6x + 2x2 + -2x2 18 + -7x + -2x2 = 6x + -6x + 2x2 + -2x2 Combine like terms: 6x + -6x = 0 18 + -7x + -2x2 = 0 + 2x2 + -2x2 18 + -7x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 18 + -7x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -9 + 3.5x + x2 = 0 Move the constant term to the right: Add '9' to each side of the equation. -9 + 3.5x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + 3.5x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 3.5x + x2 = 0 + 9 3.5x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 3.5x + x2 = 9 The x term is 3.5x. Take half its coefficient (1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. 3.5x + 3.0625 + x2 = 9 + 3.0625 Reorder the terms: 3.0625 + 3.5x + x2 = 9 + 3.0625 Combine like terms: 9 + 3.0625 = 12.0625 3.0625 + 3.5x + x2 = 12.0625 Factor a perfect square on the left side: (x + 1.75)(x + 1.75) = 12.0625 Calculate the square root of the right side: 3.473110997 Break this problem into two subproblems by setting (x + 1.75) equal to 3.473110997 and -3.473110997.Subproblem 1
x + 1.75 = 3.473110997 Simplifying x + 1.75 = 3.473110997 Reorder the terms: 1.75 + x = 3.473110997 Solving 1.75 + x = 3.473110997 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = 3.473110997 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 3.473110997 + -1.75 x = 3.473110997 + -1.75 Combine like terms: 3.473110997 + -1.75 = 1.723110997 x = 1.723110997 Simplifying x = 1.723110997Subproblem 2
x + 1.75 = -3.473110997 Simplifying x + 1.75 = -3.473110997 Reorder the terms: 1.75 + x = -3.473110997 Solving 1.75 + x = -3.473110997 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + x = -3.473110997 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -3.473110997 + -1.75 x = -3.473110997 + -1.75 Combine like terms: -3.473110997 + -1.75 = -5.223110997 x = -5.223110997 Simplifying x = -5.223110997Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.723110997, -5.223110997}
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