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Simplifying 12 + -1(x + 3) = 2x(-5 + x) Reorder the terms: 12 + -1(3 + x) = 2x(-5 + x) 12 + (3 * -1 + x * -1) = 2x(-5 + x) 12 + (-3 + -1x) = 2x(-5 + x) Combine like terms: 12 + -3 = 9 9 + -1x = 2x(-5 + x) 9 + -1x = (-5 * 2x + x * 2x) 9 + -1x = (-10x + 2x2) Solving 9 + -1x = -10x + 2x2 Solving for variable 'x'. Combine like terms: -1x + 10x = 9x 9 + 9x + -2x2 = -10x + 2x2 + 10x + -2x2 Reorder the terms: 9 + 9x + -2x2 = -10x + 10x + 2x2 + -2x2 Combine like terms: -10x + 10x = 0 9 + 9x + -2x2 = 0 + 2x2 + -2x2 9 + 9x + -2x2 = 2x2 + -2x2 Combine like terms: 2x2 + -2x2 = 0 9 + 9x + -2x2 = 0 Begin completing the square. Divide all terms by -2 the coefficient of the squared term: Divide each side by '-2'. -4.5 + -4.5x + x2 = 0 Move the constant term to the right: Add '4.5' to each side of the equation. -4.5 + -4.5x + 4.5 + x2 = 0 + 4.5 Reorder the terms: -4.5 + 4.5 + -4.5x + x2 = 0 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + -4.5x + x2 = 0 + 4.5 -4.5x + x2 = 0 + 4.5 Combine like terms: 0 + 4.5 = 4.5 -4.5x + x2 = 4.5 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = 4.5 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = 4.5 + 5.0625 Combine like terms: 4.5 + 5.0625 = 9.5625 5.0625 + -4.5x + x2 = 9.5625 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = 9.5625 Calculate the square root of the right side: 3.092329219 Break this problem into two subproblems by setting (x + -2.25) equal to 3.092329219 and -3.092329219.Subproblem 1
x + -2.25 = 3.092329219 Simplifying x + -2.25 = 3.092329219 Reorder the terms: -2.25 + x = 3.092329219 Solving -2.25 + x = 3.092329219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 3.092329219 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 3.092329219 + 2.25 x = 3.092329219 + 2.25 Combine like terms: 3.092329219 + 2.25 = 5.342329219 x = 5.342329219 Simplifying x = 5.342329219Subproblem 2
x + -2.25 = -3.092329219 Simplifying x + -2.25 = -3.092329219 Reorder the terms: -2.25 + x = -3.092329219 Solving -2.25 + x = -3.092329219 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -3.092329219 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -3.092329219 + 2.25 x = -3.092329219 + 2.25 Combine like terms: -3.092329219 + 2.25 = -0.842329219 x = -0.842329219 Simplifying x = -0.842329219Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.342329219, -0.842329219}
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