|3-2根号2|-|2根号2-1|绝对值是多少？

根号2≈1.141
|3-2根号2|-|2根号2-1|=3-2根号2-2根号2+1=4
4的绝对值是4

|3-2根号2|-|2根号2-1|
=3-2√2-2√2+1
=4-4√2
=4(1-√2)<0.
=>|3-2根号2|-|2根号2-1|绝对值是4√2-4.

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3>2√2>√2>1.

根号2≈1.141
|3-2根号2|-|2根号2-1|=3-2根号2-2根号2+1=4
4的绝对值是4
希望能帮助你！

|3-2根号2|-|2根号2-1|绝对值是多少？
=|3-2根号2-2根号2+1|
=|3-2根号2-2根号2+1|
=|4-4根号2|
=4根号2-4