= 72y^4 - 81y^3 + 27y^2 - 72y^2 + 81y - 27
(can you see what I did ?)
= 72y^4 - 81y^3 - 45y^2 + 81y - 27
(the y^2's were the only "like" terms )
I wrote the problem wrong...
then go with the first part of my 'THEN'
Now it is easier
just multiply the y^2 by each of the terms inside
= 8y^4 - 9y^3 + 3y^2
All done, since none of the terms are "like"
and that's it??? That's right, it cannot be simplified b/c of no like terms!!!
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