... = 3√25*6 -2√49*20 -2√169*6 -3√81*20=15√6 -14√20 -26√6 -27√20 =
= -11√6 -41√20 = -11√6 - 41√4*5 = -11√6 -82√5
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... = 3√25*6 -2√49*20 -2√169*6 -3√81*20=15√6 -14√20 -26√6 -27√20 =
= -11√6 -41√20 = -11√6 - 41√4*5 = -11√6 -82√5