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Simplifying -16x2 + 25x + -3 = 0 Reorder the terms: -3 + 25x + -16x2 = 0 Solving -3 + 25x + -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'. 0.1875 + -1.5625x + x2 = 0 Move the constant term to the right: Add '-0.1875' to each side of the equation. 0.1875 + -1.5625x + -0.1875 + x2 = 0 + -0.1875 Reorder the terms: 0.1875 + -0.1875 + -1.5625x + x2 = 0 + -0.1875 Combine like terms: 0.1875 + -0.1875 = 0.0000 0.0000 + -1.5625x + x2 = 0 + -0.1875 -1.5625x + x2 = 0 + -0.1875 Combine like terms: 0 + -0.1875 = -0.1875 -1.5625x + x2 = -0.1875 The x term is -1.5625x. Take half its coefficient (-0.78125). Square it (0.6103515625) and add it to both sides. Add '0.6103515625' to each side of the equation. -1.5625x + 0.6103515625 + x2 = -0.1875 + 0.6103515625 Reorder the terms: 0.6103515625 + -1.5625x + x2 = -0.1875 + 0.6103515625 Combine like terms: -0.1875 + 0.6103515625 = 0.4228515625 0.6103515625 + -1.5625x + x2 = 0.4228515625 Factor a perfect square on the left side: (x + -0.78125)(x + -0.78125) = 0.4228515625 Calculate the square root of the right side: 0.650270376 Break this problem into two subproblems by setting (x + -0.78125) equal to 0.650270376 and -0.650270376.Subproblem 1
x + -0.78125 = 0.650270376 Simplifying x + -0.78125 = 0.650270376 Reorder the terms: -0.78125 + x = 0.650270376 Solving -0.78125 + x = 0.650270376 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.78125' to each side of the equation. -0.78125 + 0.78125 + x = 0.650270376 + 0.78125 Combine like terms: -0.78125 + 0.78125 = 0.00000 0.00000 + x = 0.650270376 + 0.78125 x = 0.650270376 + 0.78125 Combine like terms: 0.650270376 + 0.78125 = 1.431520376 x = 1.431520376 Simplifying x = 1.431520376Subproblem 2
x + -0.78125 = -0.650270376 Simplifying x + -0.78125 = -0.650270376 Reorder the terms: -0.78125 + x = -0.650270376 Solving -0.78125 + x = -0.650270376 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.78125' to each side of the equation. -0.78125 + 0.78125 + x = -0.650270376 + 0.78125 Combine like terms: -0.78125 + 0.78125 = 0.00000 0.00000 + x = -0.650270376 + 0.78125 x = -0.650270376 + 0.78125 Combine like terms: -0.650270376 + 0.78125 = 0.130979624 x = 0.130979624 Simplifying x = 0.130979624Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.431520376, 0.130979624}
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