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Simplifying f(X) = -16x2 + 90x Multiply f * X fX = -16x2 + 90x Reorder the terms: fX = 90x + -16x2 Solving fX = 90x + -16x2 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'X'. f = 90xX-1 + -16x2X-1 Simplifying f = 90xX-1 + -16x2X-1
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