77 



firnilique modo evidens eft forc 



(B C D) — (B C D) nr (C D) -f- (B C) -f- (B C) 



atque pono 



(bcdej-^bgdej^cbVdj+^cdew^bdejv^b^ce). 



§i 12. Qciod (i eadem littera faepius occuirat, ip- 

 fa quidem quadrata iam evolvimus, pro cubis vero habe- 

 bimus : 



r. n — a n — (3 



(B^) — (B') = (B-^) 



ji n — a n — > 



n n — a n — 5" 



(D^) - (D^; - (D^) 

 etc. 

 Eodemque modo erit pro fuperioribus potcftatibus 



n n — a n — 3 



(B0-(B^) = (B^) 



n n—1 n — (3 



(B0-(B^) = (B^) 



n n — X n — P 



(B')-(B^)=:=(B^-) 

 etc. 



J. 13« Sin autcm plures litterae ingrediantnr^ ex 

 parte aequationis dextra etiam plures termini in fubfidium 

 vocari debent, veluti ex fequentibus formulis patefcit: 



n n — a n—y n — 3 



(B-^ C) — (B- C) =z ( B- ) h- (B C) 



n «— a n — 7 n — 3 



(B-C^) — (B-C2) zz (B-C) 4- (BC-) 



(B_^ 



