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