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Simplifying f(3x) = 3x2 + 2x + -4 Remove parenthesis around (3x) f * 3x = 3x2 + 2x + -4 Reorder the terms for easier multiplication: 3f * x = 3x2 + 2x + -4 Multiply f * x 3fx = 3x2 + 2x + -4 Reorder the terms: 3fx = -4 + 2x + 3x2 Solving 3fx = -4 + 2x + 3x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by '3x'. f = -1.333333333x-1 + 0.6666666667 + x Simplifying f = -1.333333333x-1 + 0.6666666667 + x Reorder the terms: f = 0.6666666667 + -1.333333333x-1 + x
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