What is the value of $(7+5)^2-(7-5)^2$?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
What is the value of $(7+5)^2-(7-5)^2$?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
140
What is the value of $(7+5)^2-(7-5)^2$?
train