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Simplifying -4.9x2 + 13x + 300 = 0 Reorder the terms: 300 + 13x + -4.9x2 = 0 Solving 300 + 13x + -4.9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -4.9 the coefficient of the squared term: Divide each side by '-4.9'. -61.2244898 + -2.653061224x + x2 = 0 Move the constant term to the right: Add '61.2244898' to each side of the equation. -61.2244898 + -2.653061224x + 61.2244898 + x2 = 0 + 61.2244898 Reorder the terms: -61.2244898 + 61.2244898 + -2.653061224x + x2 = 0 + 61.2244898 Combine like terms: -61.2244898 + 61.2244898 = 0.0000000 0.0000000 + -2.653061224x + x2 = 0 + 61.2244898 -2.653061224x + x2 = 0 + 61.2244898 Combine like terms: 0 + 61.2244898 = 61.2244898 -2.653061224x + x2 = 61.2244898 The x term is -2.653061224x. Take half its coefficient (-1.326530612). Square it (1.759683465) and add it to both sides. Add '1.759683465' to each side of the equation. -2.653061224x + 1.759683465 + x2 = 61.2244898 + 1.759683465 Reorder the terms: 1.759683465 + -2.653061224x + x2 = 61.2244898 + 1.759683465 Combine like terms: 61.2244898 + 1.759683465 = 62.984173265 1.759683465 + -2.653061224x + x2 = 62.984173265 Factor a perfect square on the left side: (x + -1.326530612)(x + -1.326530612) = 62.984173265 Calculate the square root of the right side: 7.93625688 Break this problem into two subproblems by setting (x + -1.326530612) equal to 7.93625688 and -7.93625688.Subproblem 1
x + -1.326530612 = 7.93625688 Simplifying x + -1.326530612 = 7.93625688 Reorder the terms: -1.326530612 + x = 7.93625688 Solving -1.326530612 + x = 7.93625688 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.326530612' to each side of the equation. -1.326530612 + 1.326530612 + x = 7.93625688 + 1.326530612 Combine like terms: -1.326530612 + 1.326530612 = 0.000000000 0.000000000 + x = 7.93625688 + 1.326530612 x = 7.93625688 + 1.326530612 Combine like terms: 7.93625688 + 1.326530612 = 9.262787492 x = 9.262787492 Simplifying x = 9.262787492Subproblem 2
x + -1.326530612 = -7.93625688 Simplifying x + -1.326530612 = -7.93625688 Reorder the terms: -1.326530612 + x = -7.93625688 Solving -1.326530612 + x = -7.93625688 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.326530612' to each side of the equation. -1.326530612 + 1.326530612 + x = -7.93625688 + 1.326530612 Combine like terms: -1.326530612 + 1.326530612 = 0.000000000 0.000000000 + x = -7.93625688 + 1.326530612 x = -7.93625688 + 1.326530612 Combine like terms: -7.93625688 + 1.326530612 = -6.609726268 x = -6.609726268 Simplifying x = -6.609726268Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.262787492, -6.609726268}
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