SOLUTION: Factor this expression completely. Note: Place factors alphabetically in the grid!
mn - 4m - 5n + 20
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Question 612894: Factor this expression completely. Note: Place factors alphabetically in the grid!
mn - 4m - 5n + 20
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
mn - 4m - 5n + 20
(mn - 4m) + (-5n + 20)
m(n - 4) + (-5n + 20)
m(n - 4) - 5(n - 4)
(m - 5)(n - 4)
So mn - 4m - 5n + 20 completely factors to (m - 5)(n - 4)
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