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Simplifying 9x2 + -36x + 16 = 0 Reorder the terms: 16 + -36x + 9x2 = 0 Solving 16 + -36x + 9x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. 1.777777778 + -4x + x2 = 0 Move the constant term to the right: Add '-1.777777778' to each side of the equation. 1.777777778 + -4x + -1.777777778 + x2 = 0 + -1.777777778 Reorder the terms: 1.777777778 + -1.777777778 + -4x + x2 = 0 + -1.777777778 Combine like terms: 1.777777778 + -1.777777778 = 0.000000000 0.000000000 + -4x + x2 = 0 + -1.777777778 -4x + x2 = 0 + -1.777777778 Combine like terms: 0 + -1.777777778 = -1.777777778 -4x + x2 = -1.777777778 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -1.777777778 + 4 Reorder the terms: 4 + -4x + x2 = -1.777777778 + 4 Combine like terms: -1.777777778 + 4 = 2.222222222 4 + -4x + x2 = 2.222222222 Factor a perfect square on the left side: (x + -2)(x + -2) = 2.222222222 Calculate the square root of the right side: 1.490711985 Break this problem into two subproblems by setting (x + -2) equal to 1.490711985 and -1.490711985.Subproblem 1
x + -2 = 1.490711985 Simplifying x + -2 = 1.490711985 Reorder the terms: -2 + x = 1.490711985 Solving -2 + x = 1.490711985 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 1.490711985 + 2 Combine like terms: -2 + 2 = 0 0 + x = 1.490711985 + 2 x = 1.490711985 + 2 Combine like terms: 1.490711985 + 2 = 3.490711985 x = 3.490711985 Simplifying x = 3.490711985Subproblem 2
x + -2 = -1.490711985 Simplifying x + -2 = -1.490711985 Reorder the terms: -2 + x = -1.490711985 Solving -2 + x = -1.490711985 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -1.490711985 + 2 Combine like terms: -2 + 2 = 0 0 + x = -1.490711985 + 2 x = -1.490711985 + 2 Combine like terms: -1.490711985 + 2 = 0.509288015 x = 0.509288015 Simplifying x = 0.509288015Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.490711985, 0.509288015}
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