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Simplifying 28x2 + -3x + -4 = 0 Reorder the terms: -4 + -3x + 28x2 = 0 Solving -4 + -3x + 28x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 28 the coefficient of the squared term: Divide each side by '28'. -0.1428571429 + -0.1071428571x + x2 = 0 Move the constant term to the right: Add '0.1428571429' to each side of the equation. -0.1428571429 + -0.1071428571x + 0.1428571429 + x2 = 0 + 0.1428571429 Reorder the terms: -0.1428571429 + 0.1428571429 + -0.1071428571x + x2 = 0 + 0.1428571429 Combine like terms: -0.1428571429 + 0.1428571429 = 0.0000000000 0.0000000000 + -0.1071428571x + x2 = 0 + 0.1428571429 -0.1071428571x + x2 = 0 + 0.1428571429 Combine like terms: 0 + 0.1428571429 = 0.1428571429 -0.1071428571x + x2 = 0.1428571429 The x term is -0.1071428571x. Take half its coefficient (-0.05357142855). Square it (0.002869897957) and add it to both sides. Add '0.002869897957' to each side of the equation. -0.1071428571x + 0.002869897957 + x2 = 0.1428571429 + 0.002869897957 Reorder the terms: 0.002869897957 + -0.1071428571x + x2 = 0.1428571429 + 0.002869897957 Combine like terms: 0.1428571429 + 0.002869897957 = 0.145727040857 0.002869897957 + -0.1071428571x + x2 = 0.145727040857 Factor a perfect square on the left side: (x + -0.05357142855)(x + -0.05357142855) = 0.145727040857 Calculate the square root of the right side: 0.381742113 Break this problem into two subproblems by setting (x + -0.05357142855) equal to 0.381742113 and -0.381742113.Subproblem 1
x + -0.05357142855 = 0.381742113 Simplifying x + -0.05357142855 = 0.381742113 Reorder the terms: -0.05357142855 + x = 0.381742113 Solving -0.05357142855 + x = 0.381742113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05357142855' to each side of the equation. -0.05357142855 + 0.05357142855 + x = 0.381742113 + 0.05357142855 Combine like terms: -0.05357142855 + 0.05357142855 = 0.00000000000 0.00000000000 + x = 0.381742113 + 0.05357142855 x = 0.381742113 + 0.05357142855 Combine like terms: 0.381742113 + 0.05357142855 = 0.43531354155 x = 0.43531354155 Simplifying x = 0.43531354155Subproblem 2
x + -0.05357142855 = -0.381742113 Simplifying x + -0.05357142855 = -0.381742113 Reorder the terms: -0.05357142855 + x = -0.381742113 Solving -0.05357142855 + x = -0.381742113 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.05357142855' to each side of the equation. -0.05357142855 + 0.05357142855 + x = -0.381742113 + 0.05357142855 Combine like terms: -0.05357142855 + 0.05357142855 = 0.00000000000 0.00000000000 + x = -0.381742113 + 0.05357142855 x = -0.381742113 + 0.05357142855 Combine like terms: -0.381742113 + 0.05357142855 = -0.32817068445 x = -0.32817068445 Simplifying x = -0.32817068445Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.43531354155, -0.32817068445}
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