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Inessa [10]
3 years ago
5

Identify the factors of 6ab − 8a + 21b − 28. (5 points)

Mathematics
2 answers:
emmasim [6.3K]3 years ago
5 0

Answer:

(2a+7)(3b-4)

Step-by-step explanation:

The given expression is

6ab-8a+21b-28

Make the groups for this expression as shown below

(6ab-8a)+(21b-28)

Factor out GCF from each group

2a(3b-4)+7(3b-4)

Now, (3b-4) is common. Hence, factored out this, we get

(3b-4)(2a+7)

Therefore, the factored form of the given expression is

(2a+7)(3b-4)

Third option is correct.

cupoosta [38]3 years ago
4 0
Rearrange to

6ab+21b-8a-28 now factor 1st and 2nd pair of terms...

3b(2a+7)-4(2a+7)

(3b-4)(2a+7)

So it is the third one down...
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