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Simplifying x2 + 15 = -10x Reorder the terms: 15 + x2 = -10x Solving 15 + x2 = -10x Solving for variable 'x'. Reorder the terms: 15 + 10x + x2 = -10x + 10x Combine like terms: -10x + 10x = 0 15 + 10x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-15' to each side of the equation. 15 + 10x + -15 + x2 = 0 + -15 Reorder the terms: 15 + -15 + 10x + x2 = 0 + -15 Combine like terms: 15 + -15 = 0 0 + 10x + x2 = 0 + -15 10x + x2 = 0 + -15 Combine like terms: 0 + -15 = -15 10x + x2 = -15 The x term is 10x. Take half its coefficient (5). Square it (25) and add it to both sides. Add '25' to each side of the equation. 10x + 25 + x2 = -15 + 25 Reorder the terms: 25 + 10x + x2 = -15 + 25 Combine like terms: -15 + 25 = 10 25 + 10x + x2 = 10 Factor a perfect square on the left side: (x + 5)(x + 5) = 10 Calculate the square root of the right side: 3.16227766 Break this problem into two subproblems by setting (x + 5) equal to 3.16227766 and -3.16227766.Subproblem 1
x + 5 = 3.16227766 Simplifying x + 5 = 3.16227766 Reorder the terms: 5 + x = 3.16227766 Solving 5 + x = 3.16227766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 3.16227766 + -5 Combine like terms: 5 + -5 = 0 0 + x = 3.16227766 + -5 x = 3.16227766 + -5 Combine like terms: 3.16227766 + -5 = -1.83772234 x = -1.83772234 Simplifying x = -1.83772234Subproblem 2
x + 5 = -3.16227766 Simplifying x + 5 = -3.16227766 Reorder the terms: 5 + x = -3.16227766 Solving 5 + x = -3.16227766 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -3.16227766 + -5 Combine like terms: 5 + -5 = 0 0 + x = -3.16227766 + -5 x = -3.16227766 + -5 Combine like terms: -3.16227766 + -5 = -8.16227766 x = -8.16227766 Simplifying x = -8.16227766Solution
The solution to the problem is based on the solutions from the subproblems. x = {-1.83772234, -8.16227766}
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