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Simplifying x2 + 6x + -26 = 9 Reorder the terms: -26 + 6x + x2 = 9 Solving -26 + 6x + x2 = 9 Solving for variable 'x'. Reorder the terms: -26 + -9 + 6x + x2 = 9 + -9 Combine like terms: -26 + -9 = -35 -35 + 6x + x2 = 9 + -9 Combine like terms: 9 + -9 = 0 -35 + 6x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '35' to each side of the equation. -35 + 6x + 35 + x2 = 0 + 35 Reorder the terms: -35 + 35 + 6x + x2 = 0 + 35 Combine like terms: -35 + 35 = 0 0 + 6x + x2 = 0 + 35 6x + x2 = 0 + 35 Combine like terms: 0 + 35 = 35 6x + x2 = 35 The x term is 6x. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6x + 9 + x2 = 35 + 9 Reorder the terms: 9 + 6x + x2 = 35 + 9 Combine like terms: 35 + 9 = 44 9 + 6x + x2 = 44 Factor a perfect square on the left side: (x + 3)(x + 3) = 44 Calculate the square root of the right side: 6.633249581 Break this problem into two subproblems by setting (x + 3) equal to 6.633249581 and -6.633249581.Subproblem 1
x + 3 = 6.633249581 Simplifying x + 3 = 6.633249581 Reorder the terms: 3 + x = 6.633249581 Solving 3 + x = 6.633249581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 6.633249581 + -3 Combine like terms: 3 + -3 = 0 0 + x = 6.633249581 + -3 x = 6.633249581 + -3 Combine like terms: 6.633249581 + -3 = 3.633249581 x = 3.633249581 Simplifying x = 3.633249581Subproblem 2
x + 3 = -6.633249581 Simplifying x + 3 = -6.633249581 Reorder the terms: 3 + x = -6.633249581 Solving 3 + x = -6.633249581 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -6.633249581 + -3 Combine like terms: 3 + -3 = 0 0 + x = -6.633249581 + -3 x = -6.633249581 + -3 Combine like terms: -6.633249581 + -3 = -9.633249581 x = -9.633249581 Simplifying x = -9.633249581Solution
The solution to the problem is based on the solutions from the subproblems. x = {3.633249581, -9.633249581}
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