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Simplifying X2 + -10X = 20 + 0 Reorder the terms: -10X + X2 = 20 + 0 Combine like terms: 20 + 0 = 20 -10X + X2 = 20 Solving -10X + X2 = 20 Solving for variable 'X'. Reorder the terms: -20 + -10X + X2 = 20 + -20 Combine like terms: 20 + -20 = 0 -20 + -10X + X2 = 0 Begin completing the square. Move the constant term to the right: Add '20' to each side of the equation. -20 + -10X + 20 + X2 = 0 + 20 Reorder the terms: -20 + 20 + -10X + X2 = 0 + 20 Combine like terms: -20 + 20 = 0 0 + -10X + X2 = 0 + 20 -10X + X2 = 0 + 20 Combine like terms: 0 + 20 = 20 -10X + X2 = 20 The X term is -10X. Take half its coefficient (-5). Square it (25) and add it to both sides. Add '25' to each side of the equation. -10X + 25 + X2 = 20 + 25 Reorder the terms: 25 + -10X + X2 = 20 + 25 Combine like terms: 20 + 25 = 45 25 + -10X + X2 = 45 Factor a perfect square on the left side: (X + -5)(X + -5) = 45 Calculate the square root of the right side: 6.708203933 Break this problem into two subproblems by setting (X + -5) equal to 6.708203933 and -6.708203933.Subproblem 1
X + -5 = 6.708203933 Simplifying X + -5 = 6.708203933 Reorder the terms: -5 + X = 6.708203933 Solving -5 + X = 6.708203933 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + X = 6.708203933 + 5 Combine like terms: -5 + 5 = 0 0 + X = 6.708203933 + 5 X = 6.708203933 + 5 Combine like terms: 6.708203933 + 5 = 11.708203933 X = 11.708203933 Simplifying X = 11.708203933Subproblem 2
X + -5 = -6.708203933 Simplifying X + -5 = -6.708203933 Reorder the terms: -5 + X = -6.708203933 Solving -5 + X = -6.708203933 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + X = -6.708203933 + 5 Combine like terms: -5 + 5 = 0 0 + X = -6.708203933 + 5 X = -6.708203933 + 5 Combine like terms: -6.708203933 + 5 = -1.708203933 X = -1.708203933 Simplifying X = -1.708203933Solution
The solution to the problem is based on the solutions from the subproblems. X = {11.708203933, -1.708203933}
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