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Simplifying 5x2 + -16x + -12 = 0 Reorder the terms: -12 + -16x + 5x2 = 0 Solving -12 + -16x + 5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -2.4 + -3.2x + x2 = 0 Move the constant term to the right: Add '2.4' to each side of the equation. -2.4 + -3.2x + 2.4 + x2 = 0 + 2.4 Reorder the terms: -2.4 + 2.4 + -3.2x + x2 = 0 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + -3.2x + x2 = 0 + 2.4 -3.2x + x2 = 0 + 2.4 Combine like terms: 0 + 2.4 = 2.4 -3.2x + x2 = 2.4 The x term is -3.2x. Take half its coefficient (-1.6). Square it (2.56) and add it to both sides. Add '2.56' to each side of the equation. -3.2x + 2.56 + x2 = 2.4 + 2.56 Reorder the terms: 2.56 + -3.2x + x2 = 2.4 + 2.56 Combine like terms: 2.4 + 2.56 = 4.96 2.56 + -3.2x + x2 = 4.96 Factor a perfect square on the left side: (x + -1.6)(x + -1.6) = 4.96 Calculate the square root of the right side: 2.227105745 Break this problem into two subproblems by setting (x + -1.6) equal to 2.227105745 and -2.227105745.Subproblem 1
x + -1.6 = 2.227105745 Simplifying x + -1.6 = 2.227105745 Reorder the terms: -1.6 + x = 2.227105745 Solving -1.6 + x = 2.227105745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.6' to each side of the equation. -1.6 + 1.6 + x = 2.227105745 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + x = 2.227105745 + 1.6 x = 2.227105745 + 1.6 Combine like terms: 2.227105745 + 1.6 = 3.827105745 x = 3.827105745 Simplifying x = 3.827105745Subproblem 2
x + -1.6 = -2.227105745 Simplifying x + -1.6 = -2.227105745 Reorder the terms: -1.6 + x = -2.227105745 Solving -1.6 + x = -2.227105745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.6' to each side of the equation. -1.6 + 1.6 + x = -2.227105745 + 1.6 Combine like terms: -1.6 + 1.6 = 0.0 0.0 + x = -2.227105745 + 1.6 x = -2.227105745 + 1.6 Combine like terms: -2.227105745 + 1.6 = -0.627105745 x = -0.627105745 Simplifying x = -0.627105745Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.827105745, -0.627105745}
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