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Simplifying 16 = x2 + -6x + 9 Reorder the terms: 16 = 9 + -6x + x2 Solving 16 = 9 + -6x + x2 Solving for variable 'x'. Combine like terms: 16 + -9 = 7 7 + 6x + -1x2 = 9 + -6x + x2 + -9 + 6x + -1x2 Reorder the terms: 7 + 6x + -1x2 = 9 + -9 + -6x + 6x + x2 + -1x2 Combine like terms: 9 + -9 = 0 7 + 6x + -1x2 = 0 + -6x + 6x + x2 + -1x2 7 + 6x + -1x2 = -6x + 6x + x2 + -1x2 Combine like terms: -6x + 6x = 0 7 + 6x + -1x2 = 0 + x2 + -1x2 7 + 6x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 7 + 6x + -1x2 = 0 Factor a trinomial. (7 + -1x)(1 + x) = 0Subproblem 1
Set the factor '(7 + -1x)' equal to zero and attempt to solve: Simplifying 7 + -1x = 0 Solving 7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -1x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1x = 0 + -7 -1x = 0 + -7 Combine like terms: 0 + -7 = -7 -1x = -7 Divide each side by '-1'. x = 7 Simplifying x = 7Subproblem 2
Set the factor '(1 + x)' equal to zero and attempt to solve: Simplifying 1 + x = 0 Solving 1 + x = 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 + x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + x = 0 + -1 x = 0 + -1 Combine like terms: 0 + -1 = -1 x = -1 Simplifying x = -1Solution
x = {7, -1}
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