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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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 2 a 1.
=4. 273, 264, 926,
4. 2.87,02.29553,E P1OXIC.
Cap. L. XII.
. 3301331,6157
10. Et praestanr quaesicum: ut ex calculo pacet. Nimirum
au =- f 27. 426, C40, Fq4.
bc = = 2. 416, 140, 14
aa = bc = +6.
bb = + 28. 378,5C
C
2. 378, 562.137
bb + ac = 17.
c0 == = 6, F09, T19, 14
ab = = 27. 890,880,85
cc = ab = 27. 999, 999, 93)
proxime.
71. Ouippe, hoc casu, cancundem est, sumere
aa + Bc = 26. Bb + ac = 17. 60 = ab = 28. Per C NegatirM;
FE aa  b0 = 16. bb - ac = 27. Cc f ab = 2B. Der C ASirmacirum.
72. Similicer; s paricer consideremus posteriorem duarum radieum 565:
Nimirum ee = 32, 060,290,88
Ouippetum aa == 26, 030, 145,44
Adeoque a = 4. 003, 766407
At at = 256. 965,562,63
73. Verum, cum, pro radice b, aequationis quadrariex G10,
ma = V: 8n a : = +2 In a a = mm a a + 4IIn: = 2. n b.
Oux vel attirmatira est vel negatira, prout L aut = nora radicalitatis praetisi-
cur: Sumenda ell, non (uc hactenus) altirmatira, sed nexacira radix: quo ha.
beatur valor b negarirus. Nimirum,
ma = Y: 8n a = 22. Inaa = m maa = 4 VIn: = 2 nB.
74. Sic habemus,
4VIn = = 18432.
= 8n a = 244 at = = 37003, 04F,05
=22 In a a + mmac = 167 aa = 50767. 470, 62
4667. 570, 44
75. Adeoque -V : 4667. 57044: = - 68. 319, 619, 72
=m a = 17 a = + 68. 064,028,92
2. n b = 36b = - 0. 255,590, 80
Adeoque b = = 0. 007,099744)
36. Inventis aurem a, B; habetur (uc prius) c - . . Ninicum,
26.
2b. 6503t4371t
9. 030, 145, 44 = + 4. 245, 989,3 =5.
0. 007,099,74
77. Flabemus uaque jam quarca vice, numeros a, B, 6: Nimirum
e
aa=
a = + 4. 003,766,407
= d. C BB74q C prO.
= =4. 2437909, 3
78. Ht