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Simplifying 2x2 + 3x = 17 Reorder the terms: 3x + 2x2 = 17 Solving 3x + 2x2 = 17 Solving for variable 'x'. Reorder the terms: -17 + 3x + 2x2 = 17 + -17 Combine like terms: 17 + -17 = 0 -17 + 3x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -8.5 + 1.5x + x2 = 0 Move the constant term to the right: Add '8.5' to each side of the equation. -8.5 + 1.5x + 8.5 + x2 = 0 + 8.5 Reorder the terms: -8.5 + 8.5 + 1.5x + x2 = 0 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + 1.5x + x2 = 0 + 8.5 1.5x + x2 = 0 + 8.5 Combine like terms: 0 + 8.5 = 8.5 1.5x + x2 = 8.5 The x term is 1.5x. Take half its coefficient (0.75). Square it (0.5625) and add it to both sides. Add '0.5625' to each side of the equation. 1.5x + 0.5625 + x2 = 8.5 + 0.5625 Reorder the terms: 0.5625 + 1.5x + x2 = 8.5 + 0.5625 Combine like terms: 8.5 + 0.5625 = 9.0625 0.5625 + 1.5x + x2 = 9.0625 Factor a perfect square on the left side: (x + 0.75)(x + 0.75) = 9.0625 Calculate the square root of the right side: 3.010398645 Break this problem into two subproblems by setting (x + 0.75) equal to 3.010398645 and -3.010398645.Subproblem 1
x + 0.75 = 3.010398645 Simplifying x + 0.75 = 3.010398645 Reorder the terms: 0.75 + x = 3.010398645 Solving 0.75 + x = 3.010398645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 3.010398645 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 3.010398645 + -0.75 x = 3.010398645 + -0.75 Combine like terms: 3.010398645 + -0.75 = 2.260398645 x = 2.260398645 Simplifying x = 2.260398645Subproblem 2
x + 0.75 = -3.010398645 Simplifying x + 0.75 = -3.010398645 Reorder the terms: 0.75 + x = -3.010398645 Solving 0.75 + x = -3.010398645 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -3.010398645 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -3.010398645 + -0.75 x = -3.010398645 + -0.75 Combine like terms: -3.010398645 + -0.75 = -3.760398645 x = -3.760398645 Simplifying x = -3.760398645Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.260398645, -3.760398645}
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