Respuesta :

Answer:

Option (3)

Step-by-step explanation:

We have to divide polynomial given as (x³ - 21x² + 147x - 343) by (x - 7) by synthetic division.

7 | 1     -21     147      -343

  ↓       7     -98        343

    1     -14      49          0

Therefore, quotient is (x² - 14x + 49) and the remainder will be 0.

Option (3) will be the answer.