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Simplifying f(x) = x2 + 4x + 4(x + -1) Multiply f * x fx = x2 + 4x + 4(x + -1) Reorder the terms: fx = x2 + 4x + 4(-1 + x) fx = x2 + 4x + (-1 * 4 + x * 4) fx = x2 + 4x + (-4 + 4x) Reorder the terms: fx = -4 + 4x + 4x + x2 Combine like terms: 4x + 4x = 8x fx = -4 + 8x + x2 Solving fx = -4 + 8x + x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = -4x-1 + 8 + x Simplifying f = -4x-1 + 8 + x Reorder the terms: f = 8 + -4x-1 + x
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