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Simplifying 81(x2 + -2x + 1) = 4 Reorder the terms: 81(1 + -2x + x2) = 4 (1 * 81 + -2x * 81 + x2 * 81) = 4 (81 + -162x + 81x2) = 4 Solving 81 + -162x + 81x2 = 4 Solving for variable 'x'. Reorder the terms: 81 + -4 + -162x + 81x2 = 4 + -4 Combine like terms: 81 + -4 = 77 77 + -162x + 81x2 = 4 + -4 Combine like terms: 4 + -4 = 0 77 + -162x + 81x2 = 0 Factor a trinomial. (7 + -9x)(11 + -9x) = 0Subproblem 1
Set the factor '(7 + -9x)' equal to zero and attempt to solve: Simplifying 7 + -9x = 0 Solving 7 + -9x = 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 + -9x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -9x = 0 + -7 -9x = 0 + -7 Combine like terms: 0 + -7 = -7 -9x = -7 Divide each side by '-9'. x = 0.7777777778 Simplifying x = 0.7777777778Subproblem 2
Set the factor '(11 + -9x)' equal to zero and attempt to solve: Simplifying 11 + -9x = 0 Solving 11 + -9x = 0 Move all terms containing x to the left, all other terms to the right. Add '-11' to each side of the equation. 11 + -11 + -9x = 0 + -11 Combine like terms: 11 + -11 = 0 0 + -9x = 0 + -11 -9x = 0 + -11 Combine like terms: 0 + -11 = -11 -9x = -11 Divide each side by '-9'. x = 1.222222222 Simplifying x = 1.222222222Solution
x = {0.7777777778, 1.222222222}
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