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Simplifying f(-1x) = 8x4 + -20x2 + 17 Remove parenthesis around (-1x) f * -1x = 8x4 + -20x2 + 17 Reorder the terms for easier multiplication: -1f * x = 8x4 + -20x2 + 17 Multiply f * x -1fx = 8x4 + -20x2 + 17 Reorder the terms: -1fx = 17 + -20x2 + 8x4 Solving -1fx = 17 + -20x2 + 8x4 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by '-1x'. f = -17x-1 + 20x + -8x3 Simplifying f = -17x-1 + 20x + -8x3
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