bn梗bm梗,bn梗

bn)bm$
(a b)(m n =am an bm bn
已知m,n在线段ab上,若am:bm=3:2,an:bn=1:3,nm=1,求ab
jeyi bn80 bn42 bm50 nvme ngff m.2 msata heat sink
23,如图,△abc为等边三角形,点m,n,分别在bc,ac上,且bm=cn,am与bn交于