Answer
See below.
Work Step by Step
To use synthetic division with $2x-4$ as the divisor, we use the normal synthetic division method. But at the end the result has to be divided by $2$, because $2x-4=2(x-2)$.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.