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Simplifying 5x2 + -30x + 4 = 0 Reorder the terms: 4 + -30x + 5x2 = 0 Solving 4 + -30x + 5x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 5 the coefficient of the squared term: Divide each side by '5'. 0.8 + -6x + x2 = 0 Move the constant term to the right: Add '-0.8' to each side of the equation. 0.8 + -6x + -0.8 + x2 = 0 + -0.8 Reorder the terms: 0.8 + -0.8 + -6x + x2 = 0 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + -6x + x2 = 0 + -0.8 -6x + x2 = 0 + -0.8 Combine like terms: 0 + -0.8 = -0.8 -6x + x2 = -0.8 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = -0.8 + 9 Reorder the terms: 9 + -6x + x2 = -0.8 + 9 Combine like terms: -0.8 + 9 = 8.2 9 + -6x + x2 = 8.2 Factor a perfect square on the left side: (x + -3)(x + -3) = 8.2 Calculate the square root of the right side: 2.863564213 Break this problem into two subproblems by setting (x + -3) equal to 2.863564213 and -2.863564213.Subproblem 1
x + -3 = 2.863564213 Simplifying x + -3 = 2.863564213 Reorder the terms: -3 + x = 2.863564213 Solving -3 + x = 2.863564213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 2.863564213 + 3 Combine like terms: -3 + 3 = 0 0 + x = 2.863564213 + 3 x = 2.863564213 + 3 Combine like terms: 2.863564213 + 3 = 5.863564213 x = 5.863564213 Simplifying x = 5.863564213Subproblem 2
x + -3 = -2.863564213 Simplifying x + -3 = -2.863564213 Reorder the terms: -3 + x = -2.863564213 Solving -3 + x = -2.863564213 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -2.863564213 + 3 Combine like terms: -3 + 3 = 0 0 + x = -2.863564213 + 3 x = -2.863564213 + 3 Combine like terms: -2.863564213 + 3 = 0.136435787 x = 0.136435787 Simplifying x = 0.136435787Solution
The solution to the problem is based on the solutions from the subproblems. x = {5.863564213, 0.136435787}
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