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Simplifying x2 + -30x + 4 = 0 Reorder the terms: 4 + -30x + x2 = 0 Solving 4 + -30x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-4' to each side of the equation. 4 + -30x + -4 + x2 = 0 + -4 Reorder the terms: 4 + -4 + -30x + x2 = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -30x + x2 = 0 + -4 -30x + x2 = 0 + -4 Combine like terms: 0 + -4 = -4 -30x + x2 = -4 The x term is -30x. Take half its coefficient (-15). Square it (225) and add it to both sides. Add '225' to each side of the equation. -30x + 225 + x2 = -4 + 225 Reorder the terms: 225 + -30x + x2 = -4 + 225 Combine like terms: -4 + 225 = 221 225 + -30x + x2 = 221 Factor a perfect square on the left side: (x + -15)(x + -15) = 221 Calculate the square root of the right side: 14.866068747 Break this problem into two subproblems by setting (x + -15) equal to 14.866068747 and -14.866068747.Subproblem 1
x + -15 = 14.866068747 Simplifying x + -15 = 14.866068747 Reorder the terms: -15 + x = 14.866068747 Solving -15 + x = 14.866068747 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = 14.866068747 + 15 Combine like terms: -15 + 15 = 0 0 + x = 14.866068747 + 15 x = 14.866068747 + 15 Combine like terms: 14.866068747 + 15 = 29.866068747 x = 29.866068747 Simplifying x = 29.866068747Subproblem 2
x + -15 = -14.866068747 Simplifying x + -15 = -14.866068747 Reorder the terms: -15 + x = -14.866068747 Solving -15 + x = -14.866068747 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '15' to each side of the equation. -15 + 15 + x = -14.866068747 + 15 Combine like terms: -15 + 15 = 0 0 + x = -14.866068747 + 15 x = -14.866068747 + 15 Combine like terms: -14.866068747 + 15 = 0.133931253 x = 0.133931253 Simplifying x = 0.133931253Solution
The solution to the problem is based on the solutions from the subproblems. x = {29.866068747, 0.133931253}
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