(3根号2-2根号3)(7根号2+5根号3)-(2根号3-3根号2)^2,看不懂的看图,

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(3根号2-2根号3)(7根号2+5根号3)-(2根号3-3根号2)^2,看不懂的看图,

(3根号2-2根号3)(7根号2+5根号3)-(2根号3-3根号2)^2,看不懂的看图,
(3根号2-2根号3)(7根号2+5根号3)-(2根号3-3根号2)^2,看不懂的看图,

(3根号2-2根号3)(7根号2+5根号3)-(2根号3-3根号2)^2,看不懂的看图,
(3根号2-2根号3)(7根号2+5根号3)-(2根号3-3根号2)^2
=42+15根号6-14根号6-30-(12-12根号6+18)
=根号6+12根号6-18
=13根号6-18