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Simplifying 16x2 + -72x + 79 = 0 Reorder the terms: 79 + -72x + 16x2 = 0 Solving 79 + -72x + 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'. 4.9375 + -4.5x + x2 = 0 Move the constant term to the right: Add '-4.9375' to each side of the equation. 4.9375 + -4.5x + -4.9375 + x2 = 0 + -4.9375 Reorder the terms: 4.9375 + -4.9375 + -4.5x + x2 = 0 + -4.9375 Combine like terms: 4.9375 + -4.9375 = 0.0000 0.0000 + -4.5x + x2 = 0 + -4.9375 -4.5x + x2 = 0 + -4.9375 Combine like terms: 0 + -4.9375 = -4.9375 -4.5x + x2 = -4.9375 The x term is -4.5x. Take half its coefficient (-2.25). Square it (5.0625) and add it to both sides. Add '5.0625' to each side of the equation. -4.5x + 5.0625 + x2 = -4.9375 + 5.0625 Reorder the terms: 5.0625 + -4.5x + x2 = -4.9375 + 5.0625 Combine like terms: -4.9375 + 5.0625 = 0.125 5.0625 + -4.5x + x2 = 0.125 Factor a perfect square on the left side: (x + -2.25)(x + -2.25) = 0.125 Calculate the square root of the right side: 0.353553391 Break this problem into two subproblems by setting (x + -2.25) equal to 0.353553391 and -0.353553391.Subproblem 1
x + -2.25 = 0.353553391 Simplifying x + -2.25 = 0.353553391 Reorder the terms: -2.25 + x = 0.353553391 Solving -2.25 + x = 0.353553391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 0.353553391 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 0.353553391 + 2.25 x = 0.353553391 + 2.25 Combine like terms: 0.353553391 + 2.25 = 2.603553391 x = 2.603553391 Simplifying x = 2.603553391Subproblem 2
x + -2.25 = -0.353553391 Simplifying x + -2.25 = -0.353553391 Reorder the terms: -2.25 + x = -0.353553391 Solving -2.25 + x = -0.353553391 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -0.353553391 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -0.353553391 + 2.25 x = -0.353553391 + 2.25 Combine like terms: -0.353553391 + 2.25 = 1.896446609 x = 1.896446609 Simplifying x = 1.896446609Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.603553391, 1.896446609}
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