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Simplifying 8x2 + -30x = -10 Reorder the terms: -30x + 8x2 = -10 Solving -30x + 8x2 = -10 Solving for variable 'x'. Reorder the terms: 10 + -30x + 8x2 = -10 + 10 Combine like terms: -10 + 10 = 0 10 + -30x + 8x2 = 0 Factor out the Greatest Common Factor (GCF), '2'. 2(5 + -15x + 4x2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(5 + -15x + 4x2)' equal to zero and attempt to solve: Simplifying 5 + -15x + 4x2 = 0 Solving 5 + -15x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 1.25 + -3.75x + x2 = 0 Move the constant term to the right: Add '-1.25' to each side of the equation. 1.25 + -3.75x + -1.25 + x2 = 0 + -1.25 Reorder the terms: 1.25 + -1.25 + -3.75x + x2 = 0 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + -3.75x + x2 = 0 + -1.25 -3.75x + x2 = 0 + -1.25 Combine like terms: 0 + -1.25 = -1.25 -3.75x + x2 = -1.25 The x term is -3.75x. Take half its coefficient (-1.875). Square it (3.515625) and add it to both sides. Add '3.515625' to each side of the equation. -3.75x + 3.515625 + x2 = -1.25 + 3.515625 Reorder the terms: 3.515625 + -3.75x + x2 = -1.25 + 3.515625 Combine like terms: -1.25 + 3.515625 = 2.265625 3.515625 + -3.75x + x2 = 2.265625 Factor a perfect square on the left side: (x + -1.875)(x + -1.875) = 2.265625 Calculate the square root of the right side: 1.505199322 Break this problem into two subproblems by setting (x + -1.875) equal to 1.505199322 and -1.505199322.Subproblem 1
x + -1.875 = 1.505199322 Simplifying x + -1.875 = 1.505199322 Reorder the terms: -1.875 + x = 1.505199322 Solving -1.875 + x = 1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.875' to each side of the equation. -1.875 + 1.875 + x = 1.505199322 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + x = 1.505199322 + 1.875 x = 1.505199322 + 1.875 Combine like terms: 1.505199322 + 1.875 = 3.380199322 x = 3.380199322 Simplifying x = 3.380199322Subproblem 2
x + -1.875 = -1.505199322 Simplifying x + -1.875 = -1.505199322 Reorder the terms: -1.875 + x = -1.505199322 Solving -1.875 + x = -1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.875' to each side of the equation. -1.875 + 1.875 + x = -1.505199322 + 1.875 Combine like terms: -1.875 + 1.875 = 0.000 0.000 + x = -1.505199322 + 1.875 x = -1.505199322 + 1.875 Combine like terms: -1.505199322 + 1.875 = 0.369800678 x = 0.369800678 Simplifying x = 0.369800678Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.380199322, 0.369800678}Solution
x = {3.380199322, 0.369800678}
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