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Simplifying 8x(2 + 5x) + -6 = 6x + 4(2x + -1) + 4 (2 * 8x + 5x * 8x) + -6 = 6x + 4(2x + -1) + 4 (16x + 40x2) + -6 = 6x + 4(2x + -1) + 4 Reorder the terms: -6 + 16x + 40x2 = 6x + 4(2x + -1) + 4 Reorder the terms: -6 + 16x + 40x2 = 6x + 4(-1 + 2x) + 4 -6 + 16x + 40x2 = 6x + (-1 * 4 + 2x * 4) + 4 -6 + 16x + 40x2 = 6x + (-4 + 8x) + 4 Reorder the terms: -6 + 16x + 40x2 = -4 + 4 + 6x + 8x Combine like terms: -4 + 4 = 0 -6 + 16x + 40x2 = 0 + 6x + 8x -6 + 16x + 40x2 = 6x + 8x Combine like terms: 6x + 8x = 14x -6 + 16x + 40x2 = 14x Solving -6 + 16x + 40x2 = 14x Solving for variable 'x'. Reorder the terms: -6 + 16x + -14x + 40x2 = 14x + -14x Combine like terms: 16x + -14x = 2x -6 + 2x + 40x2 = 14x + -14x Combine like terms: 14x + -14x = 0 -6 + 2x + 40x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-3 + x + 20x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-3 + x + 20x2)' equal to zero and attempt to solve: Simplifying -3 + x + 20x2 = 0 Solving -3 + x + 20x2 = 0 Begin completing the square. Divide all terms by 20 the coefficient of the squared term: Divide each side by '20'. -0.15 + 0.05x + x2 = 0.0 Move the constant term to the right: Add '0.15' to each side of the equation. -0.15 + 0.05x + 0.15 + x2 = 0.0 + 0.15 Reorder the terms: -0.15 + 0.15 + 0.05x + x2 = 0.0 + 0.15 Combine like terms: -0.15 + 0.15 = 0.00 0.00 + 0.05x + x2 = 0.0 + 0.15 0.05x + x2 = 0.0 + 0.15 Combine like terms: 0.0 + 0.15 = 0.15 0.05x + x2 = 0.15 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.05x + 0.25 + x2 = 0.15 + 0.25 Reorder the terms: 0.25 + 0.05x + x2 = 0.15 + 0.25 Combine like terms: 0.15 + 0.25 = 0.4 0.25 + 0.05x + x2 = 0.4 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 0.4 Calculate the square root of the right side: 0.632455532 Break this problem into two subproblems by setting (x + 0.5) equal to 0.632455532 and -0.632455532.Subproblem 1
x + 0.5 = 0.632455532 Simplifying x + 0.5 = 0.632455532 Reorder the terms: 0.5 + x = 0.632455532 Solving 0.5 + x = 0.632455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.632455532 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.632455532 + -0.5 x = 0.632455532 + -0.5 Combine like terms: 0.632455532 + -0.5 = 0.132455532 x = 0.132455532 Simplifying x = 0.132455532Subproblem 2
x + 0.5 = -0.632455532 Simplifying x + 0.5 = -0.632455532 Reorder the terms: 0.5 + x = -0.632455532 Solving 0.5 + x = -0.632455532 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.632455532 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.632455532 + -0.5 x = -0.632455532 + -0.5 Combine like terms: -0.632455532 + -0.5 = -1.132455532 x = -1.132455532 Simplifying x = -1.132455532Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.132455532, -1.132455532}Solution
x = {0.132455532, -1.132455532}
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