|1-根号2|-|根号3-根号2|+|根号2-根号3|+|根号8|RT.

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|1-根号2|-|根号3-根号2|+|根号2-根号3|+|根号8|RT.
x)1}`F551\D*b1X$oX7;wYF@XԆ3@$:6X*c2k0龎g

|1-根号2|-|根号3-根号2|+|根号2-根号3|+|根号8|RT.
|1-根号2|-|根号3-根号2|+|根号2-根号3|+|根号8|
RT.

|1-根号2|-|根号3-根号2|+|根号2-根号3|+|根号8|RT.
|1-根号2|-|根号3-根号2|+|根号2-根号3|+|根号8|
=√2-1-(√3-√2)+√3-√2+2√2
=√2-1-√3+√2+√3-√2+2√2
=3√2-1;
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