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Simplifying x2 + -14x + 49 = 9 Reorder the terms: 49 + -14x + x2 = 9 Solving 49 + -14x + x2 = 9 Solving for variable 'x'. Reorder the terms: 49 + -9 + -14x + x2 = 9 + -9 Combine like terms: 49 + -9 = 40 40 + -14x + x2 = 9 + -9 Combine like terms: 9 + -9 = 0 40 + -14x + x2 = 0 Factor a trinomial. (4 + -1x)(10 + -1x) = 0Subproblem 1
Set the factor '(4 + -1x)' equal to zero and attempt to solve: Simplifying 4 + -1x = 0 Solving 4 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1x = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1x = 0 + -4 -1x = 0 + -4 Combine like terms: 0 + -4 = -4 -1x = -4 Divide each side by '-1'. x = 4 Simplifying x = 4Subproblem 2
Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10Solution
x = {4, 10}
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