(8√6/30-4√24/24-16√6/90)-(8√6/54-6√6/16)=
(8√6/15-√24/6-8√6/45)-(4√6/27-3√6/8)=
8√6/15-2√6/6-8√6/45-4√6/27+3√6/8=DAM FACTOR COMUN PE √6 SI ADUCEM LA ACELASI NUMITOR=
√6(8·72-2·180-8·24-4·40+3·135)/1080=
√6(576-360-192-160+405)/1080=
√6(216-192-160+405)/1080=
√6(24-160+405)/1080=
√6(-136+405)/1080=269√6/1080