AE^VATIONVM IMAGINARIIS, 103 



IV, Pro x*-\-axx-\-bx-\-c—o 

 erunt criteriai 

 *tf>3#£ bb>$ac. 

 III . Pro x*-\-ax z -\-bxx~\-cx-\-d~o 

 erunt criteris 

 **>\bi bb>?ac;, cc>\bi 

 IV . Pro x 5 -\-ax'-\-bx z '-\r-cxx-\-dx-\-e~o 

 erunt criteria 

 <ra>|6;, £&>2tffj, cc>2bd; dd>\ce* 



W Pro tf^ax s -$-&x'-i~cxHrd'xx+ex-%-fz=. » 



erunt criteris 



aa>?b- bb>'/acy cc>^bd^ dd>Ycez 

 **> x i*f- 



S c h 1 i o tr, 



Omnia haec criteris a Newtow in Arithrae> 

 tica vniuerfali funt prolata et dedud pofliint ex cri- 

 terio aequationuro quadratarum , quod fi aequatio 

 pxx-\-qx-\-r~o ambas- radices habeat realea ne~ 

 cefforio fit qq>4p'K 



Cum emm cuiuaeunque: ordinis propofita. fue- 

 rit aequatioy ope eertii prmcipiv ex ea tandem plu- 

 re» aequationes quadraticae formae pxx-\- qx-\-r~o 

 erui queant quae omnes radices habent reales r flqui- 

 dem propofitae aequationis» oninea radkes fuerit rea- 



lest 



