Expand $(x+3)(2x-6)$.
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Expand $(x+3)(2x-6)$.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2x^2-18
Expand $(x+3)(2x-6)$.
train