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Simplifying 4x2 + -14x + -49 = 0 Reorder the terms: -49 + -14x + 4x2 = 0 Solving -49 + -14x + 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'. -12.25 + -3.5x + x2 = 0 Move the constant term to the right: Add '12.25' to each side of the equation. -12.25 + -3.5x + 12.25 + x2 = 0 + 12.25 Reorder the terms: -12.25 + 12.25 + -3.5x + x2 = 0 + 12.25 Combine like terms: -12.25 + 12.25 = 0.00 0.00 + -3.5x + x2 = 0 + 12.25 -3.5x + x2 = 0 + 12.25 Combine like terms: 0 + 12.25 = 12.25 -3.5x + x2 = 12.25 The x term is -3.5x. Take half its coefficient (-1.75). Square it (3.0625) and add it to both sides. Add '3.0625' to each side of the equation. -3.5x + 3.0625 + x2 = 12.25 + 3.0625 Reorder the terms: 3.0625 + -3.5x + x2 = 12.25 + 3.0625 Combine like terms: 12.25 + 3.0625 = 15.3125 3.0625 + -3.5x + x2 = 15.3125 Factor a perfect square on the left side: (x + -1.75)(x + -1.75) = 15.3125 Calculate the square root of the right side: 3.913118961 Break this problem into two subproblems by setting (x + -1.75) equal to 3.913118961 and -3.913118961.Subproblem 1
x + -1.75 = 3.913118961 Simplifying x + -1.75 = 3.913118961 Reorder the terms: -1.75 + x = 3.913118961 Solving -1.75 + x = 3.913118961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 3.913118961 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 3.913118961 + 1.75 x = 3.913118961 + 1.75 Combine like terms: 3.913118961 + 1.75 = 5.663118961 x = 5.663118961 Simplifying x = 5.663118961Subproblem 2
x + -1.75 = -3.913118961 Simplifying x + -1.75 = -3.913118961 Reorder the terms: -1.75 + x = -3.913118961 Solving -1.75 + x = -3.913118961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -3.913118961 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -3.913118961 + 1.75 x = -3.913118961 + 1.75 Combine like terms: -3.913118961 + 1.75 = -2.163118961 x = -2.163118961 Simplifying x = -2.163118961Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.663118961, -2.163118961}
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