SOLUTION: Help me please find the term of the expansion (x-y)^8 that contains y^7 and simplify it. Thank you so much!

SOLUTION: Help me please find the term of the expansion (x-y)^8 that contains y^7 and simplify it. Thank you so much!

Algebra.Com

Question 37964: Help me please find the term of the expansion (x-y)^8 that contains y^7 and simplify it. Thank you so much!
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
-8xy^7
This is found a number of ways...you can use the rules of binomial expansion, or you can use Pascal's Triangle...since the last term is +y^8, the next to last term is given...
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