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Simplifying -10x2 + -50x + 13 = 0 Reorder the terms: 13 + -50x + -10x2 = 0 Solving 13 + -50x + -10x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -10 the coefficient of the squared term: Divide each side by '-10'. -1.3 + 5x + x2 = 0 Move the constant term to the right: Add '1.3' to each side of the equation. -1.3 + 5x + 1.3 + x2 = 0 + 1.3 Reorder the terms: -1.3 + 1.3 + 5x + x2 = 0 + 1.3 Combine like terms: -1.3 + 1.3 = 0.0 0.0 + 5x + x2 = 0 + 1.3 5x + x2 = 0 + 1.3 Combine like terms: 0 + 1.3 = 1.3 5x + x2 = 1.3 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 = 1.3 + 6.25 Reorder the terms: 6.25 + 5x + x2 = 1.3 + 6.25 Combine like terms: 1.3 + 6.25 = 7.55 6.25 + 5x + x2 = 7.55 Factor a perfect square on the left side: (x + 2.5)(x + 2.5) = 7.55 Calculate the square root of the right side: 2.747726333 Break this problem into two subproblems by setting (x + 2.5) equal to 2.747726333 and -2.747726333.Subproblem 1
x + 2.5 = 2.747726333 Simplifying x + 2.5 = 2.747726333 Reorder the terms: 2.5 + x = 2.747726333 Solving 2.5 + x = 2.747726333 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 = 2.747726333 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 2.747726333 + -2.5 x = 2.747726333 + -2.5 Combine like terms: 2.747726333 + -2.5 = 0.247726333 x = 0.247726333 Simplifying x = 0.247726333Subproblem 2
x + 2.5 = -2.747726333 Simplifying x + 2.5 = -2.747726333 Reorder the terms: 2.5 + x = -2.747726333 Solving 2.5 + x = -2.747726333 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 = -2.747726333 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -2.747726333 + -2.5 x = -2.747726333 + -2.5 Combine like terms: -2.747726333 + -2.5 = -5.247726333 x = -5.247726333 Simplifying x = -5.247726333Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.247726333, -5.247726333}
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