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vitfil [10]
4 years ago
14

Find each product. 1) (5n - 5)(4n - 4)

Mathematics
1 answer:
Paraphin [41]4 years ago
6 0

Answer:

20n² - 40n + 20

Step-by-step explanation:

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

= 5n(4n) + 5n(-4) - 5(4n) - 5(-4)

= 20n² - 20n - 20n + 20

= 20n² - 40n + 20

Another way to do this:

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

= 5(n - 1) * 4(n - 1)

= 20(n - 1)(n - 1)

= 20(n - 1)²

= 20(n² - 2n + 1)

= 20n² - 40n + 20

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Jobisdone [24]

Answer:

The answer is

<h2>- \frac{67}{864}</h2>

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<h3>\frac{5}{96}  -  \frac{7}{54}</h3>

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