SOLUTION: Is my answer correct for this problem? Find the product (3r-2s)^4 My answer is 81r^4-24rs+16rs^4 Please help

Question 106708This question is from textbook
: Is my answer correct for this problem?
Find the product
(3r-2s)^4
My answer is 81r^4-24rs+16rs^4
Please help This question is from textbook

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Unfortunately, this problem isn't that simple

Remember

So this means you have to foil the first two products and the last two to get

Now break up to get

Now distribute

Combine like terms

So

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