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Simplifying 2(x2 + -7x + 5) + -1(3x2 + -4x + 9) = 0 Reorder the terms: 2(5 + -7x + x2) + -1(3x2 + -4x + 9) = 0 (5 * 2 + -7x * 2 + x2 * 2) + -1(3x2 + -4x + 9) = 0 (10 + -14x + 2x2) + -1(3x2 + -4x + 9) = 0 Reorder the terms: 10 + -14x + 2x2 + -1(9 + -4x + 3x2) = 0 10 + -14x + 2x2 + (9 * -1 + -4x * -1 + 3x2 * -1) = 0 10 + -14x + 2x2 + (-9 + 4x + -3x2) = 0 Reorder the terms: 10 + -9 + -14x + 4x + 2x2 + -3x2 = 0 Combine like terms: 10 + -9 = 1 1 + -14x + 4x + 2x2 + -3x2 = 0 Combine like terms: -14x + 4x = -10x 1 + -10x + 2x2 + -3x2 = 0 Combine like terms: 2x2 + -3x2 = -1x2 1 + -10x + -1x2 = 0 Solving 1 + -10x + -1x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -1 + 10x + x2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + 10x + 1 + x2 = 0 + 1 Reorder the terms: -1 + 1 + 10x + x2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 10x + x2 = 0 + 1 10x + x2 = 0 + 1 Combine like terms: 0 + 1 = 1 10x + x2 = 1 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = 1 + 25 Reorder the terms: 25 + 10x + x2 = 1 + 25 Combine like terms: 1 + 25 = 26 25 + 10x + x2 = 26 Factor a perfect square on the left side: (x + 5)(x + 5) = 26 Calculate the square root of the right side: 5.099019514 Break this problem into two subproblems by setting (x + 5) equal to 5.099019514 and -5.099019514.Subproblem 1
x + 5 = 5.099019514 Simplifying x + 5 = 5.099019514 Reorder the terms: 5 + x = 5.099019514 Solving 5 + x = 5.099019514 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 5.099019514 + -5 Combine like terms: 5 + -5 = 0 0 + x = 5.099019514 + -5 x = 5.099019514 + -5 Combine like terms: 5.099019514 + -5 = 0.099019514 x = 0.099019514 Simplifying x = 0.099019514Subproblem 2
x + 5 = -5.099019514 Simplifying x + 5 = -5.099019514 Reorder the terms: 5 + x = -5.099019514 Solving 5 + x = -5.099019514 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -5.099019514 + -5 Combine like terms: 5 + -5 = 0 0 + x = -5.099019514 + -5 x = -5.099019514 + -5 Combine like terms: -5.099019514 + -5 = -10.099019514 x = -10.099019514 Simplifying x = -10.099019514Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.099019514, -10.099019514}
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