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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)
# Folio 223, page id 851708439:0247
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B1 Ca
deli
Cap. INV. A L G E B R A.
haceri eepa 
TT. Si Si B = 7. c = 3. a = 6. f. = 5. r = 3. (quieunque Sit Angulus ad A)
Aquationes erunt,
ccc FC
CYLCt dib
aa = 26a = = fY. e a a  t4a = f 55. 5B  + eA 3ol1
Prioris radices crunE a = - 8 = V 13.
HOc est, a = - 44, e a = -= 21, 6, fere.
Posterioris radices, a = f 7 F10.
HOC est,s a = = 17, d a = - 3.
HIT. Si B = 4. 0 = 8. 2 = - 3. f = 2. r = +. A quatiOneS CrUNE
a a + 9a = - 32. _ aa + 5a = = 32
Radices prioris, a = - 4, 5 = V - 2Y, 75; utraque Imaxinaria.
Posterioris, a = = 2,5 = Y 138. HOc est, + 3, 685. 8 = 8, 685. fere.
V. St b = 16. 6 = 8. a = = 3. 5 = 3,5. r = 3. A quatiOnes erun,
ac + 26a = - 160. 8 a a = 12 a = F 100.
Radices - 73F3. e = 6=14.
Hoc est, - 10. = 26. 48. = 20.