SOLUTION: factor completely
7x^2-7x^2y-28x+28xy
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Question 571111: factor completely
7x^2-7x^2y-28x+28xy
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
We can find common factors in groups of terms, and see what we end up with:
If both factors in brackets were exactly the same, we would be finding a common factor again. We can fix that, because
So
and we can write that in more elegant ways, and even factor out a
Because , it can be factored too, to get to the full factorization.
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