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Simplifying 9x2 + -26x + 4 = 0 Reorder the terms: 4 + -26x + 9x2 = 0 Solving 4 + -26x + 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'. 0.4444444444 + -2.888888889x + x2 = 0 Move the constant term to the right: Add '-0.4444444444' to each side of the equation. 0.4444444444 + -2.888888889x + -0.4444444444 + x2 = 0 + -0.4444444444 Reorder the terms: 0.4444444444 + -0.4444444444 + -2.888888889x + x2 = 0 + -0.4444444444 Combine like terms: 0.4444444444 + -0.4444444444 = 0.0000000000 0.0000000000 + -2.888888889x + x2 = 0 + -0.4444444444 -2.888888889x + x2 = 0 + -0.4444444444 Combine like terms: 0 + -0.4444444444 = -0.4444444444 -2.888888889x + x2 = -0.4444444444 The x term is -2.888888889x. Take half its coefficient (-1.444444445). Square it (2.086419755) and add it to both sides. Add '2.086419755' to each side of the equation. -2.888888889x + 2.086419755 + x2 = -0.4444444444 + 2.086419755 Reorder the terms: 2.086419755 + -2.888888889x + x2 = -0.4444444444 + 2.086419755 Combine like terms: -0.4444444444 + 2.086419755 = 1.6419753106 2.086419755 + -2.888888889x + x2 = 1.6419753106 Factor a perfect square on the left side: (x + -1.444444445)(x + -1.444444445) = 1.6419753106 Calculate the square root of the right side: 1.281395845 Break this problem into two subproblems by setting (x + -1.444444445) equal to 1.281395845 and -1.281395845.Subproblem 1
x + -1.444444445 = 1.281395845 Simplifying x + -1.444444445 = 1.281395845 Reorder the terms: -1.444444445 + x = 1.281395845 Solving -1.444444445 + x = 1.281395845 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.444444445' to each side of the equation. -1.444444445 + 1.444444445 + x = 1.281395845 + 1.444444445 Combine like terms: -1.444444445 + 1.444444445 = 0.000000000 0.000000000 + x = 1.281395845 + 1.444444445 x = 1.281395845 + 1.444444445 Combine like terms: 1.281395845 + 1.444444445 = 2.72584029 x = 2.72584029 Simplifying x = 2.72584029Subproblem 2
x + -1.444444445 = -1.281395845 Simplifying x + -1.444444445 = -1.281395845 Reorder the terms: -1.444444445 + x = -1.281395845 Solving -1.444444445 + x = -1.281395845 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.444444445' to each side of the equation. -1.444444445 + 1.444444445 + x = -1.281395845 + 1.444444445 Combine like terms: -1.444444445 + 1.444444445 = 0.000000000 0.000000000 + x = -1.281395845 + 1.444444445 x = -1.281395845 + 1.444444445 Combine like terms: -1.281395845 + 1.444444445 = 0.1630486 x = 0.1630486 Simplifying x = 0.1630486Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.72584029, 0.1630486}
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