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Simplifying f(x) = -15x2 + 30x + 0 Multiply f * x fx = -15x2 + 30x + 0 Reorder the terms: fx = 0 + 30x + -15x2 Remove the zero: fx = 30x + -15x2 Solving fx = 30x + -15x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = 30 + -15x Simplifying f = 30 + -15x
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