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Simplifying f(x + 9) = x2 + 2x + 3 Reorder the terms: f(9 + x) = x2 + 2x + 3 (9 * f + x * f) = x2 + 2x + 3 (9f + fx) = x2 + 2x + 3 Reorder the terms: 9f + fx = 3 + 2x + x2 Solving 9f + fx = 3 + 2x + x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Reorder the terms: -3 + 9f + fx + -2x + -1x2 = 3 + 2x + x2 + -3 + -2x + -1x2 Reorder the terms: -3 + 9f + fx + -2x + -1x2 = 3 + -3 + 2x + -2x + x2 + -1x2 Combine like terms: 3 + -3 = 0 -3 + 9f + fx + -2x + -1x2 = 0 + 2x + -2x + x2 + -1x2 -3 + 9f + fx + -2x + -1x2 = 2x + -2x + x2 + -1x2 Combine like terms: 2x + -2x = 0 -3 + 9f + fx + -2x + -1x2 = 0 + x2 + -1x2 -3 + 9f + fx + -2x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -3 + 9f + fx + -2x + -1x2 = 0 The solution to this equation could not be determined.
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