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Simplifying x2 + 2x + -9.25 = 0 Reorder the terms: -9.25 + 2x + x2 = 0 Solving -9.25 + 2x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '9.25' to each side of the equation. -9.25 + 2x + 9.25 + x2 = 0 + 9.25 Reorder the terms: -9.25 + 9.25 + 2x + x2 = 0 + 9.25 Combine like terms: -9.25 + 9.25 = 0.00 0.00 + 2x + x2 = 0 + 9.25 2x + x2 = 0 + 9.25 Combine like terms: 0 + 9.25 = 9.25 2x + x2 = 9.25 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = 9.25 + 1 Reorder the terms: 1 + 2x + x2 = 9.25 + 1 Combine like terms: 9.25 + 1 = 10.25 1 + 2x + x2 = 10.25 Factor a perfect square on the left side: (x + 1)(x + 1) = 10.25 Calculate the square root of the right side: 3.201562119 Break this problem into two subproblems by setting (x + 1) equal to 3.201562119 and -3.201562119.Subproblem 1
x + 1 = 3.201562119 Simplifying x + 1 = 3.201562119 Reorder the terms: 1 + x = 3.201562119 Solving 1 + x = 3.201562119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 3.201562119 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.201562119 + -1 x = 3.201562119 + -1 Combine like terms: 3.201562119 + -1 = 2.201562119 x = 2.201562119 Simplifying x = 2.201562119Subproblem 2
x + 1 = -3.201562119 Simplifying x + 1 = -3.201562119 Reorder the terms: 1 + x = -3.201562119 Solving 1 + x = -3.201562119 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -3.201562119 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.201562119 + -1 x = -3.201562119 + -1 Combine like terms: -3.201562119 + -1 = -4.201562119 x = -4.201562119 Simplifying x = -4.201562119Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.201562119, -4.201562119}
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