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Simplifying x2 + -19x + 18 = -8 Reorder the terms: 18 + -19x + x2 = -8 Solving 18 + -19x + x2 = -8 Solving for variable 'x'. Reorder the terms: 18 + 8 + -19x + x2 = -8 + 8 Combine like terms: 18 + 8 = 26 26 + -19x + x2 = -8 + 8 Combine like terms: -8 + 8 = 0 26 + -19x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-26' to each side of the equation. 26 + -19x + -26 + x2 = 0 + -26 Reorder the terms: 26 + -26 + -19x + x2 = 0 + -26 Combine like terms: 26 + -26 = 0 0 + -19x + x2 = 0 + -26 -19x + x2 = 0 + -26 Combine like terms: 0 + -26 = -26 -19x + x2 = -26 The x term is -19x. Take half its coefficient (-9.5). Square it (90.25) and add it to both sides. Add '90.25' to each side of the equation. -19x + 90.25 + x2 = -26 + 90.25 Reorder the terms: 90.25 + -19x + x2 = -26 + 90.25 Combine like terms: -26 + 90.25 = 64.25 90.25 + -19x + x2 = 64.25 Factor a perfect square on the left side: (x + -9.5)(x + -9.5) = 64.25 Calculate the square root of the right side: 8.015609771 Break this problem into two subproblems by setting (x + -9.5) equal to 8.015609771 and -8.015609771.Subproblem 1
x + -9.5 = 8.015609771 Simplifying x + -9.5 = 8.015609771 Reorder the terms: -9.5 + x = 8.015609771 Solving -9.5 + x = 8.015609771 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = 8.015609771 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = 8.015609771 + 9.5 x = 8.015609771 + 9.5 Combine like terms: 8.015609771 + 9.5 = 17.515609771 x = 17.515609771 Simplifying x = 17.515609771Subproblem 2
x + -9.5 = -8.015609771 Simplifying x + -9.5 = -8.015609771 Reorder the terms: -9.5 + x = -8.015609771 Solving -9.5 + x = -8.015609771 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.5' to each side of the equation. -9.5 + 9.5 + x = -8.015609771 + 9.5 Combine like terms: -9.5 + 9.5 = 0.0 0.0 + x = -8.015609771 + 9.5 x = -8.015609771 + 9.5 Combine like terms: -8.015609771 + 9.5 = 1.484390229 x = 1.484390229 Simplifying x = 1.484390229Solution
The solution to the problem is based on the solutions from the subproblems. x = {17.515609771, 1.484390229}
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