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Simplifying f(x) = x3 + 0x2 + -31x + -30 Multiply f * x fx = x3 + 0x2 + -31x + -30 Anything times zero is zero. fx = x3 + 0x2 + -31x + -30 Reorder the terms: fx = 0 + -30 + -31x + x3 Combine like terms: 0 + -30 = -30 fx = -30 + -31x + x3 Solving fx = -30 + -31x + x3 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = -30x-1 + -31 + x2 Simplifying f = -30x-1 + -31 + x2 Reorder the terms: f = -31 + -30x-1 + x2
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