OpuseuLA « 167 
t/ 
I AC H-AC'-i-Bc*,y-AC^'C'- 
y 
Calculum reliquum in prima tantum perficiam : nam 
pro fecunda fatis erlt , litteras omnes carentes nota i eadera 
afficere exceptis B, c, eamque adimere illis , quse habent. 
Statim fefe oifert 
... aq!c'>' 
A C -4- A C -h Bff . / ^ A (r C - — n 
I Q_ C . A -h B -4- AC* -t- AG -f- ./ - . . 
'ds:=Z ^ , , , 
I AC*-HAC*-t-Be\/-AQ'C*— — 
Ex his habebiraus ^ 
dx Q^CV^A - h A H- B 
77 - y .^=: ^ ^ ==z : Igitur 
._ _ , ,^ 
r Q^C\A-hB4-AG*-^A^-i-Be*./--^^i=~^' 
Q_Cjj/>/a -H A -H 
1/ 
I Qf Cz. A-hB-hAC*-t-AG^ -|-Bc*./ 
Ergo 
I^Q: C^ A + B -h AC^ -h H- . / - ^21^ 
^ ^VA-f-A-f-B 
Ut invenias tenacitatem fili , aequationem hanc eleva ad 
quadratum 
