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Simplifying f(2x) = 2x2 + 3x + -1 Remove parenthesis around (2x) f * 2x = 2x2 + 3x + -1 Reorder the terms for easier multiplication: 2f * x = 2x2 + 3x + -1 Multiply f * x 2fx = 2x2 + 3x + -1 Reorder the terms: 2fx = -1 + 3x + 2x2 Solving 2fx = -1 + 3x + 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 = -0.5x-1 + 1.5 + x Simplifying f = -0.5x-1 + 1.5 + x Reorder the terms: f = 1.5 + -0.5x-1 + x
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