Question 59688
The given expression is: 


2 rs(12) + 4 rs(24) 


This can be written as: 


2 rs(12) + 4 rs(12 * 2)


2 rs(12) + 4[rs(12) * rs(2)]


Taking rs(12) as a common factor, we get:


rs(12)[ 2 + 4 rs(2)] 


Hence, the solution.