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Simplifying (x + 1)(x + 1) = 10 Reorder the terms: (1 + x)(x + 1) = 10 Reorder the terms: (1 + x)(1 + x) = 10 Multiply (1 + x) * (1 + x) (1(1 + x) + x(1 + x)) = 10 ((1 * 1 + x * 1) + x(1 + x)) = 10 ((1 + 1x) + x(1 + x)) = 10 (1 + 1x + (1 * x + x * x)) = 10 (1 + 1x + (1x + x2)) = 10 Combine like terms: 1x + 1x = 2x (1 + 2x + x2) = 10 Solving 1 + 2x + x2 = 10 Solving for variable 'x'. Reorder the terms: 1 + -10 + 2x + x2 = 10 + -10 Combine like terms: 1 + -10 = -9 -9 + 2x + x2 = 10 + -10 Combine like terms: 10 + -10 = 0 -9 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '9' to each side of the equation. -9 + 2x + 9 + x2 = 0 + 9 Reorder the terms: -9 + 9 + 2x + x2 = 0 + 9 Combine like terms: -9 + 9 = 0 0 + 2x + x2 = 0 + 9 2x + x2 = 0 + 9 Combine like terms: 0 + 9 = 9 2x + x2 = 9 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 + 1 Reorder the terms: 1 + 2x + x2 = 9 + 1 Combine like terms: 9 + 1 = 10 1 + 2x + x2 = 10 Factor a perfect square on the left side: (x + 1)(x + 1) = 10 Calculate the square root of the right side: 3.16227766 Break this problem into two subproblems by setting (x + 1) equal to 3.16227766 and -3.16227766.Subproblem 1
x + 1 = 3.16227766 Simplifying x + 1 = 3.16227766 Reorder the terms: 1 + x = 3.16227766 Solving 1 + x = 3.16227766 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 = 3.16227766 + -1 Combine like terms: 1 + -1 = 0 0 + x = 3.16227766 + -1 x = 3.16227766 + -1 Combine like terms: 3.16227766 + -1 = 2.16227766 x = 2.16227766 Simplifying x = 2.16227766Subproblem 2
x + 1 = -3.16227766 Simplifying x + 1 = -3.16227766 Reorder the terms: 1 + x = -3.16227766 Solving 1 + x = -3.16227766 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 = -3.16227766 + -1 Combine like terms: 1 + -1 = 0 0 + x = -3.16227766 + -1 x = -3.16227766 + -1 Combine like terms: -3.16227766 + -1 = -4.16227766 x = -4.16227766 Simplifying x = -4.16227766Solution
The solution to the problem is based on the solutions from the subproblems. x = {2.16227766, -4.16227766}
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