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Simplifying 6x2 + -5x + -12 = 18 Reorder the terms: -12 + -5x + 6x2 = 18 Solving -12 + -5x + 6x2 = 18 Solving for variable 'x'. Reorder the terms: -12 + -18 + -5x + 6x2 = 18 + -18 Combine like terms: -12 + -18 = -30 -30 + -5x + 6x2 = 18 + -18 Combine like terms: 18 + -18 = 0 -30 + -5x + 6x2 = 0 Begin completing the square. Divide all terms by 6 the coefficient of the squared term: Divide each side by '6'. -5 + -0.8333333333x + x2 = 0 Move the constant term to the right: Add '5' to each side of the equation. -5 + -0.8333333333x + 5 + x2 = 0 + 5 Reorder the terms: -5 + 5 + -0.8333333333x + x2 = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -0.8333333333x + x2 = 0 + 5 -0.8333333333x + x2 = 0 + 5 Combine like terms: 0 + 5 = 5 -0.8333333333x + x2 = 5 The x term is -0.8333333333x. Take half its coefficient (-0.4166666667). Square it (0.1736111111) and add it to both sides. Add '0.1736111111' to each side of the equation. -0.8333333333x + 0.1736111111 + x2 = 5 + 0.1736111111 Reorder the terms: 0.1736111111 + -0.8333333333x + x2 = 5 + 0.1736111111 Combine like terms: 5 + 0.1736111111 = 5.1736111111 0.1736111111 + -0.8333333333x + x2 = 5.1736111111 Factor a perfect square on the left side: (x + -0.4166666667)(x + -0.4166666667) = 5.1736111111 Calculate the square root of the right side: 2.274557344 Break this problem into two subproblems by setting (x + -0.4166666667) equal to 2.274557344 and -2.274557344.Subproblem 1
x + -0.4166666667 = 2.274557344 Simplifying x + -0.4166666667 = 2.274557344 Reorder the terms: -0.4166666667 + x = 2.274557344 Solving -0.4166666667 + x = 2.274557344 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4166666667' to each side of the equation. -0.4166666667 + 0.4166666667 + x = 2.274557344 + 0.4166666667 Combine like terms: -0.4166666667 + 0.4166666667 = 0.0000000000 0.0000000000 + x = 2.274557344 + 0.4166666667 x = 2.274557344 + 0.4166666667 Combine like terms: 2.274557344 + 0.4166666667 = 2.6912240107 x = 2.6912240107 Simplifying x = 2.6912240107Subproblem 2
x + -0.4166666667 = -2.274557344 Simplifying x + -0.4166666667 = -2.274557344 Reorder the terms: -0.4166666667 + x = -2.274557344 Solving -0.4166666667 + x = -2.274557344 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4166666667' to each side of the equation. -0.4166666667 + 0.4166666667 + x = -2.274557344 + 0.4166666667 Combine like terms: -0.4166666667 + 0.4166666667 = 0.0000000000 0.0000000000 + x = -2.274557344 + 0.4166666667 x = -2.274557344 + 0.4166666667 Combine like terms: -2.274557344 + 0.4166666667 = -1.8578906773 x = -1.8578906773 Simplifying x = -1.8578906773Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.6912240107, -1.8578906773}
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