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Factor this expression completely. mn - 4m - 5n + 20
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3 votes
Factor this expression completely.

mn - 4m - 5n + 20

User Christopher Roscoe
by
8.0k points

1 Answer

4 votes
Greetings!

Factor by grouping.

mn-4m-5n+20

m(n-4)-5(n-4)
Find the GCF.

(n-4)(m-5)

Hope this helps.
-Benjamin
User Niels Ganser
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8.9k points
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