Question

What is the total number of factors of the expression obtained by subtracting $-7pq$ from $2pq$?

Answer 1

Subtraction of $-7pq$ from $2pq=2pq-(-7pq)=2pq+7pq=9pq$

Factors of $9pq$ are $1,3,9,p,3p,9p,q,3q,9q,pq,3pq,$ and $9pq$.

The total number of factors is $12$.