(y+2 ) (y)

Question

--------- subtract -----------
(y^2-49) (y^2-6y+7)

The directions are subtract and simplify....

Answer 1

(y+2)y = y^2+2y.

y^2+2y-(y^2-49)(y^2-6y+7) =
y^2+2y-(y^4-6y^3+7y^2-49y^2+294y-343)=y^2+2y-y^4+6y^3-7y^2+49y^2-294y+343=
-y^4+6y^3+43y^2-292y+343.