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Simplifying f(x + 5) = x2 + 9x + -4 Reorder the terms: f(5 + x) = x2 + 9x + -4 (5 * f + x * f) = x2 + 9x + -4 (5f + fx) = x2 + 9x + -4 Reorder the terms: 5f + fx = -4 + 9x + x2 Solving 5f + fx = -4 + 9x + x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Reorder the terms: 4 + 5f + fx + -9x + -1x2 = -4 + 9x + x2 + 4 + -9x + -1x2 Reorder the terms: 4 + 5f + fx + -9x + -1x2 = -4 + 4 + 9x + -9x + x2 + -1x2 Combine like terms: -4 + 4 = 0 4 + 5f + fx + -9x + -1x2 = 0 + 9x + -9x + x2 + -1x2 4 + 5f + fx + -9x + -1x2 = 9x + -9x + x2 + -1x2 Combine like terms: 9x + -9x = 0 4 + 5f + fx + -9x + -1x2 = 0 + x2 + -1x2 4 + 5f + fx + -9x + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 4 + 5f + fx + -9x + -1x2 = 0 The solution to this equation could not be determined.
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