( 5?> ) 
- - 5 
the Term io^ 3 . Becaufe zSxl 2 x — or 33 6 x* 
7 
is greater than 1 ox 2 x 2, 4 = 140^* under 2 8 a? 
I place +> ^ len under the firft and laid Terms I 
place + ; and the fix Changes of under-written Signs 
fhews that there are fix impofiible Roots. 
If the impofiible Roots were to be found by the 
Newtonian Rule, the Operation would Hand thus: 
i i i 1 i 
7 9 4 _ 3 9 
+ 1 5 X s 2 , 3 + -f. I 8#* -j- 1 o x 2 — » 
+ “ + + + + 
3 
7 
z 8 x + z 4 = 0, by which Rule there are found 
+ + 
only two impofiible Roots, whereas there are fix to 
wit i + fZT 3, I — -/HI , I 4. v'' — i, 
* — V — 2,, 1 + V — i> 1 + V — - Ij the fe- 
venth Root being — 1. 
B b b b 2 III. A 
