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Simplifying -8x2 + 20x + 6 = 0 Reorder the terms: 6 + 20x + -8x2 = 0 Solving 6 + 20x + -8x2 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), '2'. 2(3 + 10x + -4x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(3 + 10x + -4x2)' equal to zero and attempt to solve: Simplifying 3 + 10x + -4x2 = 0 Solving 3 + 10x + -4x2 = 0 Begin completing the square. Divide all terms by -4 the coefficient of the squared term: Divide each side by '-4'. -0.75 + -2.5x + x2 = 0 Move the constant term to the right: Add '0.75' to each side of the equation. -0.75 + -2.5x + 0.75 + x2 = 0 + 0.75 Reorder the terms: -0.75 + 0.75 + -2.5x + x2 = 0 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + -2.5x + x2 = 0 + 0.75 -2.5x + x2 = 0 + 0.75 Combine like terms: 0 + 0.75 = 0.75 -2.5x + x2 = 0.75 The x term is -2.5x. Take half its coefficient (-1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. -2.5x + 1.5625 + x2 = 0.75 + 1.5625 Reorder the terms: 1.5625 + -2.5x + x2 = 0.75 + 1.5625 Combine like terms: 0.75 + 1.5625 = 2.3125 1.5625 + -2.5x + x2 = 2.3125 Factor a perfect square on the left side: (x + -1.25)(x + -1.25) = 2.3125 Calculate the square root of the right side: 1.520690633 Break this problem into two subproblems by setting (x + -1.25) equal to 1.520690633 and -1.520690633.Subproblem 1
x + -1.25 = 1.520690633 Simplifying x + -1.25 = 1.520690633 Reorder the terms: -1.25 + x = 1.520690633 Solving -1.25 + x = 1.520690633 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = 1.520690633 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = 1.520690633 + 1.25 x = 1.520690633 + 1.25 Combine like terms: 1.520690633 + 1.25 = 2.770690633 x = 2.770690633 Simplifying x = 2.770690633Subproblem 2
x + -1.25 = -1.520690633 Simplifying x + -1.25 = -1.520690633 Reorder the terms: -1.25 + x = -1.520690633 Solving -1.25 + x = -1.520690633 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.25' to each side of the equation. -1.25 + 1.25 + x = -1.520690633 + 1.25 Combine like terms: -1.25 + 1.25 = 0.00 0.00 + x = -1.520690633 + 1.25 x = -1.520690633 + 1.25 Combine like terms: -1.520690633 + 1.25 = -0.270690633 x = -0.270690633 Simplifying x = -0.270690633Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.770690633, -0.270690633}Solution
x = {2.770690633, -0.270690633}
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