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Simplifying 4x2 + 13x + -25 = 0 Reorder the terms: -25 + 13x + 4x2 = 0 Solving -25 + 13x + 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'. -6.25 + 3.25x + x2 = 0 Move the constant term to the right: Add '6.25' to each side of the equation. -6.25 + 3.25x + 6.25 + x2 = 0 + 6.25 Reorder the terms: -6.25 + 6.25 + 3.25x + x2 = 0 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + 3.25x + x2 = 0 + 6.25 3.25x + x2 = 0 + 6.25 Combine like terms: 0 + 6.25 = 6.25 3.25x + x2 = 6.25 The x term is 3.25x. Take half its coefficient (1.625). Square it (2.640625) and add it to both sides. Add '2.640625' to each side of the equation. 3.25x + 2.640625 + x2 = 6.25 + 2.640625 Reorder the terms: 2.640625 + 3.25x + x2 = 6.25 + 2.640625 Combine like terms: 6.25 + 2.640625 = 8.890625 2.640625 + 3.25x + x2 = 8.890625 Factor a perfect square on the left side: (x + 1.625)(x + 1.625) = 8.890625 Calculate the square root of the right side: 2.98171511 Break this problem into two subproblems by setting (x + 1.625) equal to 2.98171511 and -2.98171511.Subproblem 1
x + 1.625 = 2.98171511 Simplifying x + 1.625 = 2.98171511 Reorder the terms: 1.625 + x = 2.98171511 Solving 1.625 + x = 2.98171511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + x = 2.98171511 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + x = 2.98171511 + -1.625 x = 2.98171511 + -1.625 Combine like terms: 2.98171511 + -1.625 = 1.35671511 x = 1.35671511 Simplifying x = 1.35671511Subproblem 2
x + 1.625 = -2.98171511 Simplifying x + 1.625 = -2.98171511 Reorder the terms: 1.625 + x = -2.98171511 Solving 1.625 + x = -2.98171511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.625' to each side of the equation. 1.625 + -1.625 + x = -2.98171511 + -1.625 Combine like terms: 1.625 + -1.625 = 0.000 0.000 + x = -2.98171511 + -1.625 x = -2.98171511 + -1.625 Combine like terms: -2.98171511 + -1.625 = -4.60671511 x = -4.60671511 Simplifying x = -4.60671511Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.35671511, -4.60671511}
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