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Simplifying 2x2 + 4x + -27 = 0factor Reorder the terms: -27 + 4x + 2x2 = 0factor Anything times zero is zero. -27 + 4x + 2x2 = 0acfort Solving -27 + 4x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -13.5 + 2x + x2 = 0 Move the constant term to the right: Add '13.5' to each side of the equation. -13.5 + 2x + 13.5 + x2 = 0 + 13.5 Reorder the terms: -13.5 + 13.5 + 2x + x2 = 0 + 13.5 Combine like terms: -13.5 + 13.5 = 0.0 0.0 + 2x + x2 = 0 + 13.5 2x + x2 = 0 + 13.5 Combine like terms: 0 + 13.5 = 13.5 2x + x2 = 13.5 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 13.5 + 1 Reorder the terms: 1 + 2x + x2 = 13.5 + 1 Combine like terms: 13.5 + 1 = 14.5 1 + 2x + x2 = 14.5 Factor a perfect square on the left side: (x + 1)(x + 1) = 14.5 Calculate the square root of the right side: 3.807886553 Break this problem into two subproblems by setting (x + 1) equal to 3.807886553 and -3.807886553.Subproblem 1
x + 1 = 3.807886553 Simplifying x + 1 = 3.807886553 Reorder the terms: 1 + x = 3.807886553 Solving 1 + x = 3.807886553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 3.807886553 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.807886553 + -1 x = 3.807886553 + -1 Combine like terms: 3.807886553 + -1 = 2.807886553 x = 2.807886553 Simplifying x = 2.807886553Subproblem 2
x + 1 = -3.807886553 Simplifying x + 1 = -3.807886553 Reorder the terms: 1 + x = -3.807886553 Solving 1 + x = -3.807886553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -3.807886553 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.807886553 + -1 x = -3.807886553 + -1 Combine like terms: -3.807886553 + -1 = -4.807886553 x = -4.807886553 Simplifying x = -4.807886553Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.807886553, -4.807886553}
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