Question

Select the exclusion that fits best with this problem.

y^2+y+1/2y-2y^4=

A. X=0
B. x,y,z=0
C. 1+y+y^2, y=0, 1-y=0
D. a,b=0, a^2+ab+b^2=0
E. 2x-1=0, 4x^2+2x+1=0

Answer 1

Assuming you intend
$\dfrac{y^2+y+1}{2y-2y^4}=\dfrac{y^2+y+1}{(y^2+y+1)(2y)(1-y)}$

The best choice is 
   C. 1+y+y^2, y=0, 1-y=0