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Simplifying 9X2 + 8X = 5 Reorder the terms: 8X + 9X2 = 5 Solving 8X + 9X2 = 5 Solving for variable 'X'. Reorder the terms: -5 + 8X + 9X2 = 5 + -5 Combine like terms: 5 + -5 = 0 -5 + 8X + 9X2 = 0 Begin completing the square. Divide all terms by 9 the coefficient of the squared term: Divide each side by '9'. -0.5555555556 + 0.8888888889X + X2 = 0 Move the constant term to the right: Add '0.5555555556' to each side of the equation. -0.5555555556 + 0.8888888889X + 0.5555555556 + X2 = 0 + 0.5555555556 Reorder the terms: -0.5555555556 + 0.5555555556 + 0.8888888889X + X2 = 0 + 0.5555555556 Combine like terms: -0.5555555556 + 0.5555555556 = 0.0000000000 0.0000000000 + 0.8888888889X + X2 = 0 + 0.5555555556 0.8888888889X + X2 = 0 + 0.5555555556 Combine like terms: 0 + 0.5555555556 = 0.5555555556 0.8888888889X + X2 = 0.5555555556 The X term is 0.8888888889X. Take half its coefficient (0.4444444445). Square it (0.1975308642) and add it to both sides. Add '0.1975308642' to each side of the equation. 0.8888888889X + 0.1975308642 + X2 = 0.5555555556 + 0.1975308642 Reorder the terms: 0.1975308642 + 0.8888888889X + X2 = 0.5555555556 + 0.1975308642 Combine like terms: 0.5555555556 + 0.1975308642 = 0.7530864198 0.1975308642 + 0.8888888889X + X2 = 0.7530864198 Factor a perfect square on the left side: (X + 0.4444444445)(X + 0.4444444445) = 0.7530864198 Calculate the square root of the right side: 0.86780552 Break this problem into two subproblems by setting (X + 0.4444444445) equal to 0.86780552 and -0.86780552.Subproblem 1
X + 0.4444444445 = 0.86780552 Simplifying X + 0.4444444445 = 0.86780552 Reorder the terms: 0.4444444445 + X = 0.86780552 Solving 0.4444444445 + X = 0.86780552 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.4444444445' to each side of the equation. 0.4444444445 + -0.4444444445 + X = 0.86780552 + -0.4444444445 Combine like terms: 0.4444444445 + -0.4444444445 = 0.0000000000 0.0000000000 + X = 0.86780552 + -0.4444444445 X = 0.86780552 + -0.4444444445 Combine like terms: 0.86780552 + -0.4444444445 = 0.4233610755 X = 0.4233610755 Simplifying X = 0.4233610755Subproblem 2
X + 0.4444444445 = -0.86780552 Simplifying X + 0.4444444445 = -0.86780552 Reorder the terms: 0.4444444445 + X = -0.86780552 Solving 0.4444444445 + X = -0.86780552 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.4444444445' to each side of the equation. 0.4444444445 + -0.4444444445 + X = -0.86780552 + -0.4444444445 Combine like terms: 0.4444444445 + -0.4444444445 = 0.0000000000 0.0000000000 + X = -0.86780552 + -0.4444444445 X = -0.86780552 + -0.4444444445 Combine like terms: -0.86780552 + -0.4444444445 = -1.3122499645 X = -1.3122499645 Simplifying X = -1.3122499645Solution
The solution to the problem is based on the solutions from the subproblems. X = {0.4233610755, -1.3122499645}
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