Answer:
its 6
Step-by-step explanation:
16. 10
17. 6
18. 10
Good luck!
There are more than one answers.
Y²+7y+10/y²-25 this is the equation now if your looking for the answer it would be
y^4+7y^3-25y^2-175y+10
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(y+5)(y-5)
sorry if is a little messy