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Simplifying 4x2 + -16x + -13 = 0 Reorder the terms: -13 + -16x + 4x2 = 0 Solving -13 + -16x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -3.25 + -4x + x2 = 0 Move the constant term to the right: Add '3.25' to each side of the equation. -3.25 + -4x + 3.25 + x2 = 0 + 3.25 Reorder the terms: -3.25 + 3.25 + -4x + x2 = 0 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + -4x + x2 = 0 + 3.25 -4x + x2 = 0 + 3.25 Combine like terms: 0 + 3.25 = 3.25 -4x + x2 = 3.25 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = 3.25 + 4 Reorder the terms: 4 + -4x + x2 = 3.25 + 4 Combine like terms: 3.25 + 4 = 7.25 4 + -4x + x2 = 7.25 Factor a perfect square on the left side: (x + -2)(x + -2) = 7.25 Calculate the square root of the right side: 2.692582404 Break this problem into two subproblems by setting (x + -2) equal to 2.692582404 and -2.692582404.Subproblem 1
x + -2 = 2.692582404 Simplifying x + -2 = 2.692582404 Reorder the terms: -2 + x = 2.692582404 Solving -2 + x = 2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 2.692582404 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.692582404 + 2 x = 2.692582404 + 2 Combine like terms: 2.692582404 + 2 = 4.692582404 x = 4.692582404 Simplifying x = 4.692582404Subproblem 2
x + -2 = -2.692582404 Simplifying x + -2 = -2.692582404 Reorder the terms: -2 + x = -2.692582404 Solving -2 + x = -2.692582404 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -2.692582404 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.692582404 + 2 x = -2.692582404 + 2 Combine like terms: -2.692582404 + 2 = -0.692582404 x = -0.692582404 Simplifying x = -0.692582404Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.692582404, -0.692582404}
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