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Simplifying x2 + 7x + -1296 = 0 Reorder the terms: -1296 + 7x + x2 = 0 Solving -1296 + 7x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '1296' to each side of the equation. -1296 + 7x + 1296 + x2 = 0 + 1296 Reorder the terms: -1296 + 1296 + 7x + x2 = 0 + 1296 Combine like terms: -1296 + 1296 = 0 0 + 7x + x2 = 0 + 1296 7x + x2 = 0 + 1296 Combine like terms: 0 + 1296 = 1296 7x + x2 = 1296 The x term is 7x. Take half its coefficient (3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. 7x + 12.25 + x2 = 1296 + 12.25 Reorder the terms: 12.25 + 7x + x2 = 1296 + 12.25 Combine like terms: 1296 + 12.25 = 1308.25 12.25 + 7x + x2 = 1308.25 Factor a perfect square on the left side: (x + 3.5)(x + 3.5) = 1308.25 Calculate the square root of the right side: 36.169738733 Break this problem into two subproblems by setting (x + 3.5) equal to 36.169738733 and -36.169738733.Subproblem 1
x + 3.5 = 36.169738733 Simplifying x + 3.5 = 36.169738733 Reorder the terms: 3.5 + x = 36.169738733 Solving 3.5 + x = 36.169738733 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = 36.169738733 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = 36.169738733 + -3.5 x = 36.169738733 + -3.5 Combine like terms: 36.169738733 + -3.5 = 32.669738733 x = 32.669738733 Simplifying x = 32.669738733Subproblem 2
x + 3.5 = -36.169738733 Simplifying x + 3.5 = -36.169738733 Reorder the terms: 3.5 + x = -36.169738733 Solving 3.5 + x = -36.169738733 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.5' to each side of the equation. 3.5 + -3.5 + x = -36.169738733 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + x = -36.169738733 + -3.5 x = -36.169738733 + -3.5 Combine like terms: -36.169738733 + -3.5 = -39.669738733 x = -39.669738733 Simplifying x = -39.669738733Solution
The solution to the problem is based on the solutions from the subproblems. x = {32.669738733, -39.669738733}
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