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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 = -0.113248654 x = -0.113248654 Simplifying x = -0.113248654Subproblem 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 = -5.886751346 x = -5.886751346 Simplifying x = -5.886751346Solution
The solution to the problem is based on the solutions from the subproblems. x = {-0.113248654, -5.886751346}
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