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Simplifying f(-2x) = 2x2 + -18x Remove parenthesis around (-2x) f * -2x = 2x2 + -18x Reorder the terms for easier multiplication: -2f * x = 2x2 + -18x Multiply f * x -2fx = 2x2 + -18x Reorder the terms: -2fx = -18x + 2x2 Solving -2fx = -18x + 2x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by '-2x'. f = 9 + -1x Simplifying f = 9 + -1x
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