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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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LL. G L B R A.
134a = 2 = 16a a - 8 ab. = BB
8 ab = bb = 3a a -
2b
200b+ 6b0 - b0 = 12bb + 12bc + 5c0-
3bb + F = 4 bc + 36C
6d = 3a d f. x = 866 = 46d + 3c
ad
64 d 2 = 16 de + ec  L - 04. d a = 0 de = 3 a d
3a d = F = 8de = ec
12eC + 12cf + 3ff + 1 = 26CC + 8cf - ee
10L57
f=300-
l266 -- +
60
8d
180
Cap. XCVTII.
Sic, in calu jam expolto;
Duoniam 26aa = 13 aa F Y
Daa; adeoque radix veca
Ticminor quam 4 an led major
quam 3a; Bonebam = 5 a  b.
Sec Cum 26aa, mInuS excC
cllbus sclati D ibit cltate ad 13 a
IT; compendiosius Forec, ra.
dicem poluile= 4 a- b; ade
que 13A  L -- 26 4a - 8ab
=bb: FC Ctransponendo)
8 ab - bb =- 3aa L. Vnde pro.
aIreL 36= a= 2.6. Tum
quoniam hic, 2 b propius ad vc.
rum accedit quam 3 b, DOnO
a - 2b f6. t HC POLIO, 46
in operatione adjuncta. Ouod
tacit procestum, terria Fere par
ce breriorem. Prodicque s=T.
IL. adeoque à (=- 2. b  C)
=28O, uEprius. Jui praeltat,
uE imperatum Cxat, n a a == L3
XF8OX18O = 427200= 649
X649, T. Dui igicur, actump.
(- 20f
C(--8d C) = 38. B(= 20- d)
to T, erit Ouadratus.
Ouo autem pateat, hance.
hodum ralere, non modo pro exguirendis numeris parris, aut medioeribus, (qua-
lis elt 280, hujutre quadratus:) extribetur (spist. F9.) exemplum pro inreniendo
quadrato, qui conreniat non quadrato 209. Oui maximus est omnium quos, in
Inquisitione Cua, asgrestus elt Frenictius; quemque latecur le non inrenire poruilte,
Sed d Fermatio edoetum este.
n = 10C
F.
Da
Da a -F F = 20 ab +. B6
2
b
209a a F F = 200a
3663  3660 7960 f 1 = 406b-  2066
2006+ 90
=
c
66 -
2
0543.
12
025
6233472406
16026875123
6385090375C
a = 66664 433249
a = 2b +6 = 25240424455500
5498
1382567863
  C = 7807569584602
6460- 26Cd L 9CC =- 806C- 400d
2.4. 6d.
5dd=
c
d. +C
6
iC Ottulleus
Atus in 109 (qui eric Figuracum 29) uno adcico, conticier quacrarum; cujus ra.
dix erie tigurarum 25.
Numeroque a sic invento (fixurarum La) Guacratus esed (latum 27) du-
Idem