Divide .
Put the numerator in descending order first. becomes . Synthetic division reads coefficients strictly from the highest power down, so an out-of-order polynomial must be rewritten before anything else.
Set up with the root p = 1. The divisor vanishes at , and the coefficient list is .
Run the division. Bring down ; and ; and . The bottom row is .
Interpret the row. The first two entries are the quotient (one degree lower than the numerator), and the last entry is the remainder:
Confirm the remainder with the remainder theorem. Evaluating the numerator at : , which matches the remainder exactly - an independent check that costs one substitution.
Verify the whole identity. , the original numerator.
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