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Simplifying -16x2 + 35x + 8 = 0 Reorder the terms: 8 + 35x + -16x2 = 0 Solving 8 + 35x + -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'. -0.5 + -2.1875x + x2 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + -2.1875x + 0.5 + x2 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + -2.1875x + x2 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + -2.1875x + x2 = 0 + 0.5 -2.1875x + x2 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 -2.1875x + x2 = 0.5 The x term is -2.1875x. Take half its coefficient (-1.09375). Square it (1.196289063) and add it to both sides. Add '1.196289063' to each side of the equation. -2.1875x + 1.196289063 + x2 = 0.5 + 1.196289063 Reorder the terms: 1.196289063 + -2.1875x + x2 = 0.5 + 1.196289063 Combine like terms: 0.5 + 1.196289063 = 1.696289063 1.196289063 + -2.1875x + x2 = 1.696289063 Factor a perfect square on the left side: (x + -1.09375)(x + -1.09375) = 1.696289063 Calculate the square root of the right side: 1.302416624 Break this problem into two subproblems by setting (x + -1.09375) equal to 1.302416624 and -1.302416624.Subproblem 1
x + -1.09375 = 1.302416624 Simplifying x + -1.09375 = 1.302416624 Reorder the terms: -1.09375 + x = 1.302416624 Solving -1.09375 + x = 1.302416624 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.09375' to each side of the equation. -1.09375 + 1.09375 + x = 1.302416624 + 1.09375 Combine like terms: -1.09375 + 1.09375 = 0.00000 0.00000 + x = 1.302416624 + 1.09375 x = 1.302416624 + 1.09375 Combine like terms: 1.302416624 + 1.09375 = 2.396166624 x = 2.396166624 Simplifying x = 2.396166624Subproblem 2
x + -1.09375 = -1.302416624 Simplifying x + -1.09375 = -1.302416624 Reorder the terms: -1.09375 + x = -1.302416624 Solving -1.09375 + x = -1.302416624 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.09375' to each side of the equation. -1.09375 + 1.09375 + x = -1.302416624 + 1.09375 Combine like terms: -1.09375 + 1.09375 = 0.00000 0.00000 + x = -1.302416624 + 1.09375 x = -1.302416624 + 1.09375 Combine like terms: -1.302416624 + 1.09375 = -0.208666624 x = -0.208666624 Simplifying x = -0.208666624Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.396166624, -0.208666624}
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