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Simplifying -3x2 + 18x + -2 = 0 Reorder the terms: -2 + 18x + -3x2 = 0 Solving -2 + 18x + -3x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by -3 the coefficient of the squared term: Divide each side by '-3'. 0.6666666667 + -6x + x2 = 0 Move the constant term to the right: Add '-0.6666666667' to each side of the equation. 0.6666666667 + -6x + -0.6666666667 + x2 = 0 + -0.6666666667 Reorder the terms: 0.6666666667 + -0.6666666667 + -6x + x2 = 0 + -0.6666666667 Combine like terms: 0.6666666667 + -0.6666666667 = 0.0000000000 0.0000000000 + -6x + x2 = 0 + -0.6666666667 -6x + x2 = 0 + -0.6666666667 Combine like terms: 0 + -0.6666666667 = -0.6666666667 -6x + x2 = -0.6666666667 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = -0.6666666667 + 9 Reorder the terms: 9 + -6x + x2 = -0.6666666667 + 9 Combine like terms: -0.6666666667 + 9 = 8.3333333333 9 + -6x + x2 = 8.3333333333 Factor a perfect square on the left side: (x + -3)(x + -3) = 8.3333333333 Calculate the square root of the right side: 2.886751346 Break this problem into two subproblems by setting (x + -3) equal to 2.886751346 and -2.886751346.Subproblem 1
x + -3 = 2.886751346 Simplifying x + -3 = 2.886751346 Reorder the terms: -3 + x = 2.886751346 Solving -3 + x = 2.886751346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 2.886751346 + 3 Combine like terms: -3 + 3 = 0 0 + x = 2.886751346 + 3 x = 2.886751346 + 3 Combine like terms: 2.886751346 + 3 = 5.886751346 x = 5.886751346 Simplifying x = 5.886751346Subproblem 2
x + -3 = -2.886751346 Simplifying x + -3 = -2.886751346 Reorder the terms: -3 + x = -2.886751346 Solving -3 + x = -2.886751346 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -2.886751346 + 3 Combine like terms: -3 + 3 = 0 0 + x = -2.886751346 + 3 x = -2.886751346 + 3 Combine like terms: -2.886751346 + 3 = 0.113248654 x = 0.113248654 Simplifying x = 0.113248654Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.886751346, 0.113248654}
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