i©4 DERADICIBVS 



les: hoc principium ad aequationes cuiuscunque gra- 

 dus extendi poterit. 



Ita ex aequatione cubica x z -\-axx-\-bx-\-c 

 nafcuntur hae duae quadratieae 



3XX-+-zax-\-b — o et axx-t-2bx-\-3C~ o 

 rnde concluditur vt ante 



aa^> ^b et bb^> 3 ac. 



Simili modo aequatio quarti ordinis 



x*-\-ax'-\-bxx-\-cx-\-dzr.Q praebet has tres 

 quadraticas 



4.3. xx-\-$. 2.ax-\-2. i.b~~ o 



1. ^.axx-\-2. ~.bx-\-~i*i.c~ o 



i2i«+2.3 c #4-3. 4^ — 



et aequatio quinti gradus 



tf 5 -Htf**+~ 7 *M--'*.*' + </.x , -W:~= o praebet has 

 quatuor quadraticas 



5.4.3. xx-\-4-. 3.2.ax-\-'%.2. i.b~o 



1.4.3 axx-\-2.$. 2.bx-\-$.2. i.c—o 



i.2.$,bxx-\- 2. 3. 2. c «-+-3.4. i.d~o 



i.2.3fnH-2.34ix+3 4.5.^3:0 



quae fupra allata criteria fuppeditant. 



Quoniam autem operofum fbret has formas 

 ■vlterius continuarc rem generatim expediamus et ex 



aequa- 



