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beks73 [17]
3 years ago
11

Write the expansion of each binomial. (x-y)^4

Mathematics
1 answer:
TEA [102]3 years ago
4 0
When you expand the binomial, you isolate each of the parts.
So, (x-y)^4 would turn into...

x^4 - y^4

The powers stay the same because (outside the parenthesis) you multiply them with whatever is inside the parenthesis. In this case, would be 1. All variables and numbers without a listed power have a power of one. Multiply 4*1 to get 4. 
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