Răspuns :
Hei !
5(radical din 5 +2 radical 7)+2(radical7+3radical5)
5(√5 + 2 √ 7) + 2 ( √7 + 3√5 )
5√5 + 10√7 + 2√7 + 6√5
11√5 + 12√7
[tex]5( \sqrt{5} + 2 \sqrt{7} ) + 2( \sqrt{7} + 3 \sqrt{5} )[/tex]
[tex]5 \sqrt{5} + 10 \sqrt{7} + 2 \sqrt{7} + 6 \sqrt{5} [/tex]
[tex]11 \sqrt{5} + 12 \sqrt{7} [/tex]