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Simplifying (x + 2)(x + 2) + -9 = 0 Reorder the terms: (2 + x)(x + 2) + -9 = 0 Reorder the terms: (2 + x)(2 + x) + -9 = 0 Multiply (2 + x) * (2 + x) (2(2 + x) + x(2 + x)) + -9 = 0 ((2 * 2 + x * 2) + x(2 + x)) + -9 = 0 ((4 + 2x) + x(2 + x)) + -9 = 0 (4 + 2x + (2 * x + x * x)) + -9 = 0 (4 + 2x + (2x + x2)) + -9 = 0 Combine like terms: 2x + 2x = 4x (4 + 4x + x2) + -9 = 0 Reorder the terms: 4 + -9 + 4x + x2 = 0 Combine like terms: 4 + -9 = -5 -5 + 4x + x2 = 0 Solving -5 + 4x + x2 = 0 Solving for variable 'x'. Factor a trinomial. (-5 + -1x)(1 + -1x) = 0Subproblem 1
Set the factor '(-5 + -1x)' equal to zero and attempt to solve: Simplifying -5 + -1x = 0 Solving -5 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -1x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -1x = 0 + 5 -1x = 0 + 5 Combine like terms: 0 + 5 = 5 -1x = 5 Divide each side by '-1'. x = -5 Simplifying x = -5Subproblem 2
Set the factor '(1 + -1x)' equal to zero and attempt to solve: Simplifying 1 + -1x = 0 Solving 1 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -1x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -1x = 0 + -1 -1x = 0 + -1 Combine like terms: 0 + -1 = -1 -1x = -1 Divide each side by '-1'. x = 1 Simplifying x = 1Solution
x = {-5, 1}
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