Answer:
1. Number of terms - 2
Variables - x
Constant term - 10
2. Number of terms - 3
Variables - x and y
Constant term - 5
3. Number of terms - 1
Variables - s
Constant term - 0
4. Number of terms - 2
Variables - m
Constant term - 8
5. Number of terms - 2
Variables - x
Constant term - 51