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Simplifying 3(2x + 4) + -6(x + -3) = x(x + -4) + 15 Reorder the terms: 3(4 + 2x) + -6(x + -3) = x(x + -4) + 15 (4 * 3 + 2x * 3) + -6(x + -3) = x(x + -4) + 15 (12 + 6x) + -6(x + -3) = x(x + -4) + 15 Reorder the terms: 12 + 6x + -6(-3 + x) = x(x + -4) + 15 12 + 6x + (-3 * -6 + x * -6) = x(x + -4) + 15 12 + 6x + (18 + -6x) = x(x + -4) + 15 Reorder the terms: 12 + 18 + 6x + -6x = x(x + -4) + 15 Combine like terms: 12 + 18 = 30 30 + 6x + -6x = x(x + -4) + 15 Combine like terms: 6x + -6x = 0 30 + 0 = x(x + -4) + 15 30 = x(x + -4) + 15 Reorder the terms: 30 = x(-4 + x) + 15 30 = (-4 * x + x * x) + 15 30 = (-4x + x2) + 15 Reorder the terms: 30 = 15 + -4x + x2 Solving 30 = 15 + -4x + x2 Solving for variable 'x'. Combine like terms: 30 + -15 = 15 15 + 4x + -1x2 = 15 + -4x + x2 + -15 + 4x + -1x2 Reorder the terms: 15 + 4x + -1x2 = 15 + -15 + -4x + 4x + x2 + -1x2 Combine like terms: 15 + -15 = 0 15 + 4x + -1x2 = 0 + -4x + 4x + x2 + -1x2 15 + 4x + -1x2 = -4x + 4x + x2 + -1x2 Combine like terms: -4x + 4x = 0 15 + 4x + -1x2 = 0 + x2 + -1x2 15 + 4x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 15 + 4x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -15 + -4x + x2 = 0 Move the constant term to the right: Add '15' to each side of the equation. -15 + -4x + 15 + x2 = 0 + 15 Reorder the terms: -15 + 15 + -4x + x2 = 0 + 15 Combine like terms: -15 + 15 = 0 0 + -4x + x2 = 0 + 15 -4x + x2 = 0 + 15 Combine like terms: 0 + 15 = 15 -4x + x2 = 15 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = 15 + 4 Reorder the terms: 4 + -4x + x2 = 15 + 4 Combine like terms: 15 + 4 = 19 4 + -4x + x2 = 19 Factor a perfect square on the left side: (x + -2)(x + -2) = 19 Calculate the square root of the right side: 4.358898944 Break this problem into two subproblems by setting (x + -2) equal to 4.358898944 and -4.358898944.Subproblem 1
x + -2 = 4.358898944 Simplifying x + -2 = 4.358898944 Reorder the terms: -2 + x = 4.358898944 Solving -2 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 4.358898944 + 2 Combine like terms: -2 + 2 = 0 0 + x = 4.358898944 + 2 x = 4.358898944 + 2 Combine like terms: 4.358898944 + 2 = 6.358898944 x = 6.358898944 Simplifying x = 6.358898944Subproblem 2
x + -2 = -4.358898944 Simplifying x + -2 = -4.358898944 Reorder the terms: -2 + x = -4.358898944 Solving -2 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -4.358898944 + 2 Combine like terms: -2 + 2 = 0 0 + x = -4.358898944 + 2 x = -4.358898944 + 2 Combine like terms: -4.358898944 + 2 = -2.358898944 x = -2.358898944 Simplifying x = -2.358898944Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.358898944, -2.358898944}
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