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Simplifying 6x2 + 12x + -7 = 0 Reorder the terms: -7 + 12x + 6x2 = 0 Solving -7 + 12x + 6x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -1.166666667 + 2x + x2 = 0 Move the constant term to the right: Add '1.166666667' to each side of the equation. -1.166666667 + 2x + 1.166666667 + x2 = 0 + 1.166666667 Reorder the terms: -1.166666667 + 1.166666667 + 2x + x2 = 0 + 1.166666667 Combine like terms: -1.166666667 + 1.166666667 = 0.000000000 0.000000000 + 2x + x2 = 0 + 1.166666667 2x + x2 = 0 + 1.166666667 Combine like terms: 0 + 1.166666667 = 1.166666667 2x + x2 = 1.166666667 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 = 1.166666667 + 1 Reorder the terms: 1 + 2x + x2 = 1.166666667 + 1 Combine like terms: 1.166666667 + 1 = 2.166666667 1 + 2x + x2 = 2.166666667 Factor a perfect square on the left side: (x + 1)(x + 1) = 2.166666667 Calculate the square root of the right side: 1.471960145 Break this problem into two subproblems by setting (x + 1) equal to 1.471960145 and -1.471960145.Subproblem 1
x + 1 = 1.471960145 Simplifying x + 1 = 1.471960145 Reorder the terms: 1 + x = 1.471960145 Solving 1 + x = 1.471960145 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 = 1.471960145 + -1 Combine like terms: 1 + -1 = 0 0 + x = 1.471960145 + -1 x = 1.471960145 + -1 Combine like terms: 1.471960145 + -1 = 0.471960145 x = 0.471960145 Simplifying x = 0.471960145Subproblem 2
x + 1 = -1.471960145 Simplifying x + 1 = -1.471960145 Reorder the terms: 1 + x = -1.471960145 Solving 1 + x = -1.471960145 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 = -1.471960145 + -1 Combine like terms: 1 + -1 = 0 0 + x = -1.471960145 + -1 x = -1.471960145 + -1 Combine like terms: -1.471960145 + -1 = -2.471960145 x = -2.471960145 Simplifying x = -2.471960145Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.471960145, -2.471960145}
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