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2 years ago

Factor this expression: mn - 4m - 5n + 20

Mathematics

1 answer:

andrey2020 [161]2 years ago

6 0

Answer:

(m-5) (n-4)

Step-by-step explanation:

mn - 4m - 5n + 20

We will factor by grouping

mn -5n -4m +20

Factor an n out of the first 2 terms and a -4 out of the last 2 terms

n (m-5) -4(m-5)

Now factor out a m-5

(m-5) (n-4)

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