j 6 Mifcettanea Curio fa. 



do the bufmefs •, for it does at leaft Quintuple 

 the given Figures in the Root, neither is the 

 Calculus very large or operofe. Tho' the Au- 

 thor no where fhews his method of Invention, 

 or any Demonftration, altho' it feems to be 

 very much wanting } especially iince all things 

 are not right in the printed Book, which may 

 eafily deceive the Unskilful. Now the 5th 

 power of the fide a-\-e is compos'd of thejc 

 Members, * 5 +5.*V1-io*V + eo4V+5** 4 -|- 

 ft^fe* s 4 -fr-,from whence b=%a*e -j-ioaV-l-io 

 *V+5*'% rejecting e' becaufe of its fmalnefs. 



' Whence — == *V|-2*V4-2^ 3 -U 4 , and ad- 

 s'* 



ding on both fides ~*%we fhall have\A^+_| £ 



Then fub ftraeting \aa from both fides, \a-\ -e 

 will r^^/+L«^. to which if \k be 



added, then will *+e=\a+^" ^-vL„ . ' 



ta the root of the Power a'-^b. But if it had 

 a'—b (the quantity * being too great ) the 



Rule would have been thus,-^ y\AV- 



And this Rule approaches wonderfully, fo that 

 there is hardly any need of Reftitution. > 



But while I confidered thefe things with 

 my felf, I light upon a General Method for 

 the Formula's of all Powers whatfoever, and 

 (which being handfome and concife enough) 

 I thought I would not conceal from the Pub- 

 lick. Thefe 



