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Simplifying f(x) = 1 + -5x + 4x Multiply f * x fx = 1 + -5x + 4x Combine like terms: -5x + 4x = -1x fx = 1 + -1x Solving fx = 1 + -1x Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = x-1 + -1 Simplifying f = x-1 + -1 Reorder the terms: f = -1 + x-1
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