Answer:
-5y +1
Step-by-step explanation:
Let the polynomial to be subtracted be represented by Q. Then you want ...
... (y^2 -5y +1) -Q = y^2
... (y^2 -5y +1) = y^2 +Q . . . . add Q
... (y^2 -5y +1) -y^2 = Q . . . . .subtract y^2
... -5y +1 = Q . . . . . . . . . . . . . simplify
The polynomial to be subtracted is -5y +1.
