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Simplifying 16x2 + -8x + -49 = 0 Reorder the terms: -49 + -8x + 16x2 = 0 Solving -49 + -8x + 16x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 16 the coefficient of the squared term: Divide each side by '16'. -3.0625 + -0.5x + x2 = 0 Move the constant term to the right: Add '3.0625' to each side of the equation. -3.0625 + -0.5x + 3.0625 + x2 = 0 + 3.0625 Reorder the terms: -3.0625 + 3.0625 + -0.5x + x2 = 0 + 3.0625 Combine like terms: -3.0625 + 3.0625 = 0.0000 0.0000 + -0.5x + x2 = 0 + 3.0625 -0.5x + x2 = 0 + 3.0625 Combine like terms: 0 + 3.0625 = 3.0625 -0.5x + x2 = 3.0625 The x term is -0.5x. Take half its coefficient (-0.25). Square it (0.0625) and add it to both sides. Add '0.0625' to each side of the equation. -0.5x + 0.0625 + x2 = 3.0625 + 0.0625 Reorder the terms: 0.0625 + -0.5x + x2 = 3.0625 + 0.0625 Combine like terms: 3.0625 + 0.0625 = 3.125 0.0625 + -0.5x + x2 = 3.125 Factor a perfect square on the left side: (x + -0.25)(x + -0.25) = 3.125 Calculate the square root of the right side: 1.767766953 Break this problem into two subproblems by setting (x + -0.25) equal to 1.767766953 and -1.767766953.Subproblem 1
x + -0.25 = 1.767766953 Simplifying x + -0.25 = 1.767766953 Reorder the terms: -0.25 + x = 1.767766953 Solving -0.25 + x = 1.767766953 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 1.767766953 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 1.767766953 + 0.25 x = 1.767766953 + 0.25 Combine like terms: 1.767766953 + 0.25 = 2.017766953 x = 2.017766953 Simplifying x = 2.017766953Subproblem 2
x + -0.25 = -1.767766953 Simplifying x + -0.25 = -1.767766953 Reorder the terms: -0.25 + x = -1.767766953 Solving -0.25 + x = -1.767766953 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -1.767766953 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -1.767766953 + 0.25 x = -1.767766953 + 0.25 Combine like terms: -1.767766953 + 0.25 = -1.517766953 x = -1.517766953 Simplifying x = -1.517766953Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.017766953, -1.517766953}
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