For how many positive integer values of $x$ is the sum $x^2+4x+4$ less than 20?
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
For how many positive integer values of $x$ is the sum $x^2+4x+4$ less than 20?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
2
For how many positive integer values of $x$ is the sum $x^2+4x+4$ less than 20?
train