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Simplifying (x2 + -1x) + -8(x2 + -1x) + 12 = 0 Reorder the terms: (-1x + x2) + -8(x2 + -1x) + 12 = 0 Remove parenthesis around (-1x + x2) -1x + x2 + -8(x2 + -1x) + 12 = 0 Reorder the terms: -1x + x2 + -8(-1x + x2) + 12 = 0 -1x + x2 + (-1x * -8 + x2 * -8) + 12 = 0 -1x + x2 + (8x + -8x2) + 12 = 0 Reorder the terms: 12 + -1x + 8x + x2 + -8x2 = 0 Combine like terms: -1x + 8x = 7x 12 + 7x + x2 + -8x2 = 0 Combine like terms: x2 + -8x2 = -7x2 12 + 7x + -7x2 = 0 Solving 12 + 7x + -7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -7 the coefficient of the squared term: Divide each side by '-7'. -1.714285714 + -1x + x2 = 0 Move the constant term to the right: Add '1.714285714' to each side of the equation. -1.714285714 + -1x + 1.714285714 + x2 = 0 + 1.714285714 Reorder the terms: -1.714285714 + 1.714285714 + -1x + x2 = 0 + 1.714285714 Combine like terms: -1.714285714 + 1.714285714 = 0.000000000 0.000000000 + -1x + x2 = 0 + 1.714285714 -1x + x2 = 0 + 1.714285714 Combine like terms: 0 + 1.714285714 = 1.714285714 -1x + x2 = 1.714285714 The x term is -1x. 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. -1x + 0.25 + x2 = 1.714285714 + 0.25 Reorder the terms: 0.25 + -1x + x2 = 1.714285714 + 0.25 Combine like terms: 1.714285714 + 0.25 = 1.964285714 0.25 + -1x + x2 = 1.964285714 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 1.964285714 Calculate the square root of the right side: 1.401529776 Break this problem into two subproblems by setting (x + -0.5) equal to 1.401529776 and -1.401529776.Subproblem 1
x + -0.5 = 1.401529776 Simplifying x + -0.5 = 1.401529776 Reorder the terms: -0.5 + x = 1.401529776 Solving -0.5 + x = 1.401529776 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 = 1.401529776 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.401529776 + 0.5 x = 1.401529776 + 0.5 Combine like terms: 1.401529776 + 0.5 = 1.901529776 x = 1.901529776 Simplifying x = 1.901529776Subproblem 2
x + -0.5 = -1.401529776 Simplifying x + -0.5 = -1.401529776 Reorder the terms: -0.5 + x = -1.401529776 Solving -0.5 + x = -1.401529776 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 = -1.401529776 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.401529776 + 0.5 x = -1.401529776 + 0.5 Combine like terms: -1.401529776 + 0.5 = -0.901529776 x = -0.901529776 Simplifying x = -0.901529776Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.901529776, -0.901529776}
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