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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis (shelfmarks Leibn. Marg. 100:1/2, Stück 2; Leibn. Marg. 100:1/2)
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BIIS
11
caclic
VCHIIO
bc
i1
Cap. XXXIK. A L GF B R A.
TIT. Fadem cubiea; Suppotico B0 = b a F C d, (adeoque. -  - = d; ) deleto ter-
mino tertio: et, pro du substicuro ubique ejus ralore; reductisque omnibus ad
communem denominatorem; et rejectis qua se muruo destruum: ad hanc reducitur;
aa a - Bb a a = - bBCC
=cc
B +c
b+6
Radices; + B, +. C, Ct (P20 = 4)
Sect. 4. Pr. 8.
IV. Cubicarum Fertia (quam videas (uo 10c0.)
aaa F baa F Bca = = bcd.
Caa - b da
=daa = 6d a
046
Polico v. H c = d Cadeoque substicuro ubique B. + c. pro d de deleris quae se mu-
cuo destruunt) reducitur ad hanc;
aaa - bba = + bb5 Radices; - b, - c, dc (pro + 4) + B. +6.
= b0a + b06.
CCa
Sect. 4. pr. 8.
c
V. Eadem; Polico 30 = B d F ca; adeoque - = d; recucitur (pariler ur in
harum reductarum secunca) aet hanc;
aa a = Bba a = = BBCC.
0+c
= BCaa -  Radices; - b, - 6, 8 (prO + 4) -
+ +ccaa 1 B +c
b +c
Sect. 4. PT. 9.
VI. Nona Cubicarum; (quam supra videas.)
aa a = 3baa = 3bb a = = 3bB =cCC.
Retumpto (ex constructione) B -a = = c; ad hanc reducitur;
aaa = 3bCa = = bbb -c6c. Radix, a = b - 6.
VII. Decima Cubicarum.
Sect. 4. Dr. 24.
aaa = 3b aa + 36ba = - bbb = CC5.
Desumpto a F b = = c, reducitur ad hanc;
ac a + 3b0a = - b0b +60c. Radix, a = b - 5.
Sect. A. PT. 16.
b+
Obi noces; Harum Secundam, Tertiam, e Sextam; caldem este ac Guartam,
Ouintam, et Seprimam; nisi quod Radicum signa tunc contraria; de aequationum
Signa locis paribus (Snon detine) mutantur.
Idemque post obserres in Nona e Duodecima; item in Decima de Decimaterria;
Pariterque in Ondecima S Decimaquarra; ee ubicunque timiles occurrunt calus.
VIIT. Ondecima Cubicarum;
aa a - 3b aa. + 3Bba = + BBB +656.
RetumpCO a -B = c; ad hanc reducitur;
aa a -- 3bca = = bbB Radlix, a. = f B. Fc.
+c66. Sect. 4. Pr. 15.
NNE