Unde A = 0, B = 0, C = — 7C, Dr= — 14D, E = 

 — 7rj_ — — . __r'— j'_ — — — — . 



Aequationes igkur septimi gradus hujus generalis formae 

 ^r_7Ca:'— 14Da:'-— X ^^--=0 



resolvibiles sunt, earumque radices erunt 



A'= V u V _ 



C"^ D 



B'=aV— - J-aV— 

 C'^ D 



C ^ D 



•^ C" D 



