1) Find the common factor between 2 and 6 (if there is one)... ...which is 2. 2) Find the common factor between a^2b and ab^2... ...which is ab. 3) Combine the answers in part 1 and 2; and separate that answer with brackets... ...2ab() 4) Find the result in the brackets, by calculating what you have to multiply 2ab to find the result 2a^2b+6ab^2... ...2ab(b+3a)