Answer:
= 9x³+ 0x²+0x -52....
Step-by-step explanation:
Descending powers means you start with highest power and then decrease.
In this expression the highest power is 3. We do not have any variable with power 2 and 1. So we will write it as:
9x³ - 52
= 9x³+ 0x²+0x -52....
