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Simplifying 7 + 4(2x + -1) = 3x + -5x(1x + -6) Reorder the terms: 7 + 4(-1 + 2x) = 3x + -5x(1x + -6) 7 + (-1 * 4 + 2x * 4) = 3x + -5x(1x + -6) 7 + (-4 + 8x) = 3x + -5x(1x + -6) Combine like terms: 7 + -4 = 3 3 + 8x = 3x + -5x(1x + -6) Reorder the terms: 3 + 8x = 3x + -5x(-6 + 1x) 3 + 8x = 3x + (-6 * -5x + 1x * -5x) 3 + 8x = 3x + (30x + -5x2) Combine like terms: 3x + 30x = 33x 3 + 8x = 33x + -5x2 Solving 3 + 8x = 33x + -5x2 Solving for variable 'x'. Combine like terms: 8x + -33x = -25x 3 + -25x + 5x2 = 33x + -5x2 + -33x + 5x2 Reorder the terms: 3 + -25x + 5x2 = 33x + -33x + -5x2 + 5x2 Combine like terms: 33x + -33x = 0 3 + -25x + 5x2 = 0 + -5x2 + 5x2 3 + -25x + 5x2 = -5x2 + 5x2 Combine like terms: -5x2 + 5x2 = 0 3 + -25x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.6 + -5x + x2 = 0 Move the constant term to the right: Add '-0.6' to each side of the equation. 0.6 + -5x + -0.6 + x2 = 0 + -0.6 Reorder the terms: 0.6 + -0.6 + -5x + x2 = 0 + -0.6 Combine like terms: 0.6 + -0.6 = 0.0 0.0 + -5x + x2 = 0 + -0.6 -5x + x2 = 0 + -0.6 Combine like terms: 0 + -0.6 = -0.6 -5x + x2 = -0.6 The x term is -5x. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5x + 6.25 + x2 = -0.6 + 6.25 Reorder the terms: 6.25 + -5x + x2 = -0.6 + 6.25 Combine like terms: -0.6 + 6.25 = 5.65 6.25 + -5x + x2 = 5.65 Factor a perfect square on the left side: (x + -2.5)(x + -2.5) = 5.65 Calculate the square root of the right side: 2.376972865 Break this problem into two subproblems by setting (x + -2.5) equal to 2.376972865 and -2.376972865.Subproblem 1
x + -2.5 = 2.376972865 Simplifying x + -2.5 = 2.376972865 Reorder the terms: -2.5 + x = 2.376972865 Solving -2.5 + x = 2.376972865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = 2.376972865 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = 2.376972865 + 2.5 x = 2.376972865 + 2.5 Combine like terms: 2.376972865 + 2.5 = 4.876972865 x = 4.876972865 Simplifying x = 4.876972865Subproblem 2
x + -2.5 = -2.376972865 Simplifying x + -2.5 = -2.376972865 Reorder the terms: -2.5 + x = -2.376972865 Solving -2.5 + x = -2.376972865 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.5' to each side of the equation. -2.5 + 2.5 + x = -2.376972865 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + x = -2.376972865 + 2.5 x = -2.376972865 + 2.5 Combine like terms: -2.376972865 + 2.5 = 0.123027135 x = 0.123027135 Simplifying x = 0.123027135Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.876972865, 0.123027135}
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