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Simplifying x2 + 2x + 10 = 121 Reorder the terms: 10 + 2x + x2 = 121 Solving 10 + 2x + x2 = 121 Solving for variable 'x'. Reorder the terms: 10 + -121 + 2x + x2 = 121 + -121 Combine like terms: 10 + -121 = -111 -111 + 2x + x2 = 121 + -121 Combine like terms: 121 + -121 = 0 -111 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '111' to each side of the equation. -111 + 2x + 111 + x2 = 0 + 111 Reorder the terms: -111 + 111 + 2x + x2 = 0 + 111 Combine like terms: -111 + 111 = 0 0 + 2x + x2 = 0 + 111 2x + x2 = 0 + 111 Combine like terms: 0 + 111 = 111 2x + x2 = 111 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 = 111 + 1 Reorder the terms: 1 + 2x + x2 = 111 + 1 Combine like terms: 111 + 1 = 112 1 + 2x + x2 = 112 Factor a perfect square on the left side: (x + 1)(x + 1) = 112 Calculate the square root of the right side: 10.583005244 Break this problem into two subproblems by setting (x + 1) equal to 10.583005244 and -10.583005244.Subproblem 1
x + 1 = 10.583005244 Simplifying x + 1 = 10.583005244 Reorder the terms: 1 + x = 10.583005244 Solving 1 + x = 10.583005244 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 = 10.583005244 + -1 Combine like terms: 1 + -1 = 0 0 + x = 10.583005244 + -1 x = 10.583005244 + -1 Combine like terms: 10.583005244 + -1 = 9.583005244 x = 9.583005244 Simplifying x = 9.583005244Subproblem 2
x + 1 = -10.583005244 Simplifying x + 1 = -10.583005244 Reorder the terms: 1 + x = -10.583005244 Solving 1 + x = -10.583005244 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 = -10.583005244 + -1 Combine like terms: 1 + -1 = 0 0 + x = -10.583005244 + -1 x = -10.583005244 + -1 Combine like terms: -10.583005244 + -1 = -11.583005244 x = -11.583005244 Simplifying x = -11.583005244Solution
The solution to the problem is based on the solutions from the subproblems. x = {9.583005244, -11.583005244}
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