9 6 DE RADICIBVS 



quae cum tribus partibus conftet , ftatuamus breui- 

 tatis gratia a~\-dz-\-gzz-\- etc. =z P 



b s^e z-\- bzz -\- etc. •=■ Q 



c-\~fz-\- izz -+- etc. cr R 

 vt fit P-hQ*-i-Rtftf— o haec per x multiplicats 

 dat nouam eiusdem formae 



Rz-\-Vx-\-Qxx^o; haec denuo per x 



mukipiicata dabit 



Q z -\- R z x -\-V x \x zzl c. 

 lam vt ex his tribus aequationibus tam x 

 quam xx eliminetur priraa per L fecunda per M 

 et tertia per N multiplicetur , fiatque 



LQ-i-MPH-NRs — o et infuper 



LR + M(J+NP=:o 

 eritque tum LP4-MR2-+-NQ* — o. 

 Ex duabus prioribus autem elicitur 



_MP — NR z , — M q— N P 



L l~ £ — r 



ideoque MPR-t-NRRz^MQQ-hNPQ 



. - M P Q,— R R z 



vnde tit g- — fR - clcl- 



Statuatur ergo • M ~ P Q- R R z 



et N-PR-Q.Q.ac fiet L=QRs-PP 



quocirca aequatio quaefita erit 



sPQRs-P-Q^s-R^szzo. 



Hinc 



