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Simplifying 10x2 + -12 = 8x Reorder the terms: -12 + 10x2 = 8x Solving -12 + 10x2 = 8x Solving for variable 'x'. Reorder the terms: -12 + -8x + 10x2 = 8x + -8x Combine like terms: 8x + -8x = 0 -12 + -8x + 10x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(-6 + -4x + 5x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-6 + -4x + 5x2)' equal to zero and attempt to solve: Simplifying -6 + -4x + 5x2 = 0 Solving -6 + -4x + 5x2 = 0 Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. -1.2 + -0.8x + x2 = 0 Move the constant term to the right: Add '1.2' to each side of the equation. -1.2 + -0.8x + 1.2 + x2 = 0 + 1.2 Reorder the terms: -1.2 + 1.2 + -0.8x + x2 = 0 + 1.2 Combine like terms: -1.2 + 1.2 = 0.0 0.0 + -0.8x + x2 = 0 + 1.2 -0.8x + x2 = 0 + 1.2 Combine like terms: 0 + 1.2 = 1.2 -0.8x + x2 = 1.2 The x term is -0.8x. Take half its coefficient (-0.4). Square it (0.16) and add it to both sides. Add '0.16' to each side of the equation. -0.8x + 0.16 + x2 = 1.2 + 0.16 Reorder the terms: 0.16 + -0.8x + x2 = 1.2 + 0.16 Combine like terms: 1.2 + 0.16 = 1.36 0.16 + -0.8x + x2 = 1.36 Factor a perfect square on the left side: (x + -0.4)(x + -0.4) = 1.36 Calculate the square root of the right side: 1.166190379 Break this problem into two subproblems by setting (x + -0.4) equal to 1.166190379 and -1.166190379.Subproblem 1
x + -0.4 = 1.166190379 Simplifying x + -0.4 = 1.166190379 Reorder the terms: -0.4 + x = 1.166190379 Solving -0.4 + x = 1.166190379 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 1.166190379 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 1.166190379 + 0.4 x = 1.166190379 + 0.4 Combine like terms: 1.166190379 + 0.4 = 1.566190379 x = 1.566190379 Simplifying x = 1.566190379Subproblem 2
x + -0.4 = -1.166190379 Simplifying x + -0.4 = -1.166190379 Reorder the terms: -0.4 + x = -1.166190379 Solving -0.4 + x = -1.166190379 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -1.166190379 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -1.166190379 + 0.4 x = -1.166190379 + 0.4 Combine like terms: -1.166190379 + 0.4 = -0.766190379 x = -0.766190379 Simplifying x = -0.766190379Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.566190379, -0.766190379}Solution
x = {1.566190379, -0.766190379}
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