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Simplifying 4x2 + -25x + 30 = 0 Reorder the terms: 30 + -25x + 4x2 = 0 Solving 30 + -25x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 7.5 + -6.25x + x2 = 0 Move the constant term to the right: Add '-7.5' to each side of the equation. 7.5 + -6.25x + -7.5 + x2 = 0 + -7.5 Reorder the terms: 7.5 + -7.5 + -6.25x + x2 = 0 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + -6.25x + x2 = 0 + -7.5 -6.25x + x2 = 0 + -7.5 Combine like terms: 0 + -7.5 = -7.5 -6.25x + x2 = -7.5 The x term is -6.25x. Take half its coefficient (-3.125). Square it (9.765625) and add it to both sides. Add '9.765625' to each side of the equation. -6.25x + 9.765625 + x2 = -7.5 + 9.765625 Reorder the terms: 9.765625 + -6.25x + x2 = -7.5 + 9.765625 Combine like terms: -7.5 + 9.765625 = 2.265625 9.765625 + -6.25x + x2 = 2.265625 Factor a perfect square on the left side: (x + -3.125)(x + -3.125) = 2.265625 Calculate the square root of the right side: 1.505199322 Break this problem into two subproblems by setting (x + -3.125) equal to 1.505199322 and -1.505199322.Subproblem 1
x + -3.125 = 1.505199322 Simplifying x + -3.125 = 1.505199322 Reorder the terms: -3.125 + x = 1.505199322 Solving -3.125 + x = 1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.125' to each side of the equation. -3.125 + 3.125 + x = 1.505199322 + 3.125 Combine like terms: -3.125 + 3.125 = 0.000 0.000 + x = 1.505199322 + 3.125 x = 1.505199322 + 3.125 Combine like terms: 1.505199322 + 3.125 = 4.630199322 x = 4.630199322 Simplifying x = 4.630199322Subproblem 2
x + -3.125 = -1.505199322 Simplifying x + -3.125 = -1.505199322 Reorder the terms: -3.125 + x = -1.505199322 Solving -3.125 + x = -1.505199322 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.125' to each side of the equation. -3.125 + 3.125 + x = -1.505199322 + 3.125 Combine like terms: -3.125 + 3.125 = 0.000 0.000 + x = -1.505199322 + 3.125 x = -1.505199322 + 3.125 Combine like terms: -1.505199322 + 3.125 = 1.619800678 x = 1.619800678 Simplifying x = 1.619800678Solution
The solution to the problem is based on the solutions from the subproblems. x = {4.630199322, 1.619800678}
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