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