Expand completely: (3a-6)(a+3)

Final Answer: a² +3a -18 Using FOIL (First, outside, inside, last) we multiply the terms in the brackets together. First: 3a multiplied by a = 3a²  Outside: 3a x 3 = 9a Inside: -6 x a= -6a Last: -6 x 3 = -18 Combine these terms to get your final answer: 3a²+9a-6a-18= 3a²+3a-18