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Simplifying 5x2 + -1(3x2 + -5x + 1) = 0 Reorder the terms: 5x2 + -1(1 + -5x + 3x2) = 0 5x2 + (1 * -1 + -5x * -1 + 3x2 * -1) = 0 5x2 + (-1 + 5x + -3x2) = 0 Reorder the terms: -1 + 5x + 5x2 + -3x2 = 0 Combine like terms: 5x2 + -3x2 = 2x2 -1 + 5x + 2x2 = 0 Solving -1 + 5x + 2x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -0.5 + 2.5x + x2 = 0 Move the constant term to the right: Add '0.5' to each side of the equation. -0.5 + 2.5x + 0.5 + x2 = 0 + 0.5 Reorder the terms: -0.5 + 0.5 + 2.5x + x2 = 0 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + 2.5x + x2 = 0 + 0.5 2.5x + x2 = 0 + 0.5 Combine like terms: 0 + 0.5 = 0.5 2.5x + x2 = 0.5 The x term is 2.5x. Take half its coefficient (1.25). Square it (1.5625) and add it to both sides. Add '1.5625' to each side of the equation. 2.5x + 1.5625 + x2 = 0.5 + 1.5625 Reorder the terms: 1.5625 + 2.5x + x2 = 0.5 + 1.5625 Combine like terms: 0.5 + 1.5625 = 2.0625 1.5625 + 2.5x + x2 = 2.0625 Factor a perfect square on the left side: (x + 1.25)(x + 1.25) = 2.0625 Calculate the square root of the right side: 1.436140662 Break this problem into two subproblems by setting (x + 1.25) equal to 1.436140662 and -1.436140662.Subproblem 1
x + 1.25 = 1.436140662 Simplifying x + 1.25 = 1.436140662 Reorder the terms: 1.25 + x = 1.436140662 Solving 1.25 + x = 1.436140662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + x = 1.436140662 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + x = 1.436140662 + -1.25 x = 1.436140662 + -1.25 Combine like terms: 1.436140662 + -1.25 = 0.186140662 x = 0.186140662 Simplifying x = 0.186140662Subproblem 2
x + 1.25 = -1.436140662 Simplifying x + 1.25 = -1.436140662 Reorder the terms: 1.25 + x = -1.436140662 Solving 1.25 + x = -1.436140662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + x = -1.436140662 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + x = -1.436140662 + -1.25 x = -1.436140662 + -1.25 Combine like terms: -1.436140662 + -1.25 = -2.686140662 x = -2.686140662 Simplifying x = -2.686140662Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.186140662, -2.686140662}
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