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Simplifying -2.7x2 + 30x + -12 = 0 Reorder the terms: -12 + 30x + -2.7x2 = 0 Solving -12 + 30x + -2.7x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -2.7 the coefficient of the squared term: Divide each side by '-2.7'. 4.444444444 + -11.11111111x + x2 = 0 Move the constant term to the right: Add '-4.444444444' to each side of the equation. 4.444444444 + -11.11111111x + -4.444444444 + x2 = 0 + -4.444444444 Reorder the terms: 4.444444444 + -4.444444444 + -11.11111111x + x2 = 0 + -4.444444444 Combine like terms: 4.444444444 + -4.444444444 = 0.000000000 0.000000000 + -11.11111111x + x2 = 0 + -4.444444444 -11.11111111x + x2 = 0 + -4.444444444 Combine like terms: 0 + -4.444444444 = -4.444444444 -11.11111111x + x2 = -4.444444444 The x term is -11.11111111x. Take half its coefficient (-5.555555555). Square it (30.86419752) and add it to both sides. Add '30.86419752' to each side of the equation. -11.11111111x + 30.86419752 + x2 = -4.444444444 + 30.86419752 Reorder the terms: 30.86419752 + -11.11111111x + x2 = -4.444444444 + 30.86419752 Combine like terms: -4.444444444 + 30.86419752 = 26.419753076 30.86419752 + -11.11111111x + x2 = 26.419753076 Factor a perfect square on the left side: (x + -5.555555555)(x + -5.555555555) = 26.419753076 Calculate the square root of the right side: 5.140014891 Break this problem into two subproblems by setting (x + -5.555555555) equal to 5.140014891 and -5.140014891.Subproblem 1
x + -5.555555555 = 5.140014891 Simplifying x + -5.555555555 = 5.140014891 Reorder the terms: -5.555555555 + x = 5.140014891 Solving -5.555555555 + x = 5.140014891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.555555555' to each side of the equation. -5.555555555 + 5.555555555 + x = 5.140014891 + 5.555555555 Combine like terms: -5.555555555 + 5.555555555 = 0.000000000 0.000000000 + x = 5.140014891 + 5.555555555 x = 5.140014891 + 5.555555555 Combine like terms: 5.140014891 + 5.555555555 = 10.695570446 x = 10.695570446 Simplifying x = 10.695570446Subproblem 2
x + -5.555555555 = -5.140014891 Simplifying x + -5.555555555 = -5.140014891 Reorder the terms: -5.555555555 + x = -5.140014891 Solving -5.555555555 + x = -5.140014891 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.555555555' to each side of the equation. -5.555555555 + 5.555555555 + x = -5.140014891 + 5.555555555 Combine like terms: -5.555555555 + 5.555555555 = 0.000000000 0.000000000 + x = -5.140014891 + 5.555555555 x = -5.140014891 + 5.555555555 Combine like terms: -5.140014891 + 5.555555555 = 0.415540664 x = 0.415540664 Simplifying x = 0.415540664Solution
The solution to the problem is based on the solutions from the subproblems. x = {10.695570446, 0.415540664}
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