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Simplifying 9x2 + -9x + 1 = 0 Reorder the terms: 1 + -9x + 9x2 = 0 Solving 1 + -9x + 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'. 0.1111111111 + -1x + x2 = 0 Move the constant term to the right: Add '-0.1111111111' to each side of the equation. 0.1111111111 + -1x + -0.1111111111 + x2 = 0 + -0.1111111111 Reorder the terms: 0.1111111111 + -0.1111111111 + -1x + x2 = 0 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + -1x + x2 = 0 + -0.1111111111 -1x + x2 = 0 + -0.1111111111 Combine like terms: 0 + -0.1111111111 = -0.1111111111 -1x + x2 = -0.1111111111 The x term is -1x. Take half its coefficient (-0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. -1x + 0.25 + x2 = -0.1111111111 + 0.25 Reorder the terms: 0.25 + -1x + x2 = -0.1111111111 + 0.25 Combine like terms: -0.1111111111 + 0.25 = 0.1388888889 0.25 + -1x + x2 = 0.1388888889 Factor a perfect square on the left side: (x + -0.5)(x + -0.5) = 0.1388888889 Calculate the square root of the right side: 0.372677996 Break this problem into two subproblems by setting (x + -0.5) equal to 0.372677996 and -0.372677996.Subproblem 1
x + -0.5 = 0.372677996 Simplifying x + -0.5 = 0.372677996 Reorder the terms: -0.5 + x = 0.372677996 Solving -0.5 + x = 0.372677996 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 0.372677996 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 0.372677996 + 0.5 x = 0.372677996 + 0.5 Combine like terms: 0.372677996 + 0.5 = 0.872677996 x = 0.872677996 Simplifying x = 0.872677996Subproblem 2
x + -0.5 = -0.372677996 Simplifying x + -0.5 = -0.372677996 Reorder the terms: -0.5 + x = -0.372677996 Solving -0.5 + x = -0.372677996 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -0.372677996 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -0.372677996 + 0.5 x = -0.372677996 + 0.5 Combine like terms: -0.372677996 + 0.5 = 0.127322004 x = 0.127322004 Simplifying x = 0.127322004Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.872677996, 0.127322004}
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