Odpowiedzi

2009-11-03T20:23:11+01:00
(6√5-4√5 )(6√5+4√7)=180+24√35-120-16√35=60+8√35
(5√3-√3)(√5-√3)(√5-√3)=(4√3)(5-2√15+3)=(4√3)(8-2√15)=
=32√3-8√45
(2√6+4√8)(2√6+4√8)= 24+16√48+128=152+16√48
2009-11-03T20:29:21+01:00
(6√5-4√5 )(6√5+4√7) = 180+24√35-120-16√35 = 60+8√35

(5√3-√3)(√5-√3)(√5-√3) = (4√3)*(5-2√15+3) = (4√3)*(8-2√15) =
32√3-8√45 = 32√3-24√5

(2√6+4√8)(2√6+4√8) = 24+16√48+128 = 152+16√48 =152+64√3