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Simplifying -4x(x + 3) = 4(-1x + -1) Reorder the terms: -4x(3 + x) = 4(-1x + -1) (3 * -4x + x * -4x) = 4(-1x + -1) (-12x + -4x2) = 4(-1x + -1) Reorder the terms: -12x + -4x2 = 4(-1 + -1x) -12x + -4x2 = (-1 * 4 + -1x * 4) -12x + -4x2 = (-4 + -4x) Solving -12x + -4x2 = -4 + -4x Solving for variable 'x'. Reorder the terms: 4 + -12x + 4x + -4x2 = -4 + -4x + 4 + 4x Combine like terms: -12x + 4x = -8x 4 + -8x + -4x2 = -4 + -4x + 4 + 4x Reorder the terms: 4 + -8x + -4x2 = -4 + 4 + -4x + 4x Combine like terms: -4 + 4 = 0 4 + -8x + -4x2 = 0 + -4x + 4x 4 + -8x + -4x2 = -4x + 4x Combine like terms: -4x + 4x = 0 4 + -8x + -4x2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(1 + -2x + -1x2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(1 + -2x + -1x2)' equal to zero and attempt to solve: Simplifying 1 + -2x + -1x2 = 0 Solving 1 + -2x + -1x2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -1 + 2x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + 2x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + 2x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 2x + x2 = 0 + 1 2x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 2x + x2 = 1 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 1 + 1 Reorder the terms: 1 + 2x + x2 = 1 + 1 Combine like terms: 1 + 1 = 2 1 + 2x + x2 = 2 Factor a perfect square on the left side: (x + 1)(x + 1) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (x + 1) equal to 1.414213562 and -1.414213562.Subproblem 1
x + 1 = 1.414213562 Simplifying x + 1 = 1.414213562 Reorder the terms: 1 + x = 1.414213562 Solving 1 + x = 1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.414213562 + -1 x = 1.414213562 + -1 Combine like terms: 1.414213562 + -1 = 0.414213562 x = 0.414213562 Simplifying x = 0.414213562Subproblem 2
x + 1 = -1.414213562 Simplifying x + 1 = -1.414213562 Reorder the terms: 1 + x = -1.414213562 Solving 1 + x = -1.414213562 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -1.414213562 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.414213562 + -1 x = -1.414213562 + -1 Combine like terms: -1.414213562 + -1 = -2.414213562 x = -2.414213562 Simplifying x = -2.414213562Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.414213562, -2.414213562}Solution
x = {0.414213562, -2.414213562}
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