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Simplifying 2x2 + -13x = 5 Reorder the terms: -13x + 2x2 = 5 Solving -13x + 2x2 = 5 Solving for variable 'x'. Reorder the terms: -5 + -13x + 2x2 = 5 + -5 Combine like terms: 5 + -5 = 0 -5 + -13x + 2x2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -2.5 + -6.5x + x2 = 0 Move the constant term to the right: Add '2.5' to each side of the equation. -2.5 + -6.5x + 2.5 + x2 = 0 + 2.5 Reorder the terms: -2.5 + 2.5 + -6.5x + x2 = 0 + 2.5 Combine like terms: -2.5 + 2.5 = 0.0 0.0 + -6.5x + x2 = 0 + 2.5 -6.5x + x2 = 0 + 2.5 Combine like terms: 0 + 2.5 = 2.5 -6.5x + x2 = 2.5 The x term is -6.5x. Take half its coefficient (-3.25). Square it (10.5625) and add it to both sides. Add '10.5625' to each side of the equation. -6.5x + 10.5625 + x2 = 2.5 + 10.5625 Reorder the terms: 10.5625 + -6.5x + x2 = 2.5 + 10.5625 Combine like terms: 2.5 + 10.5625 = 13.0625 10.5625 + -6.5x + x2 = 13.0625 Factor a perfect square on the left side: (x + -3.25)(x + -3.25) = 13.0625 Calculate the square root of the right side: 3.614208074 Break this problem into two subproblems by setting (x + -3.25) equal to 3.614208074 and -3.614208074.Subproblem 1
x + -3.25 = 3.614208074 Simplifying x + -3.25 = 3.614208074 Reorder the terms: -3.25 + x = 3.614208074 Solving -3.25 + x = 3.614208074 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = 3.614208074 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = 3.614208074 + 3.25 x = 3.614208074 + 3.25 Combine like terms: 3.614208074 + 3.25 = 6.864208074 x = 6.864208074 Simplifying x = 6.864208074Subproblem 2
x + -3.25 = -3.614208074 Simplifying x + -3.25 = -3.614208074 Reorder the terms: -3.25 + x = -3.614208074 Solving -3.25 + x = -3.614208074 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = -3.614208074 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = -3.614208074 + 3.25 x = -3.614208074 + 3.25 Combine like terms: -3.614208074 + 3.25 = -0.364208074 x = -0.364208074 Simplifying x = -0.364208074Solution
The solution to the problem is based on the solutions from the subproblems. x = {6.864208074, -0.364208074}
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