(3根号2+根号7)(3根号2-根号7)

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(3根号2+根号7)(3根号2-根号7)(3根号2+根号7)(3根号2-根号7)(3根号2+根号7)(3根号2-根号7)(3根号2+根号7)(3根号2-根号7)=9*2-7=18-7=11(3根号2+

(3根号2+根号7)(3根号2-根号7)
(3根号2+根号7)(3根号2-根号7)

(3根号2+根号7)(3根号2-根号7)
(3根号2+根号7)(3根号2-根号7)
=9*2-7
=18-7
=11

(3根号2+根号7)(3根号2-根号7)
=18-7
=11