Answer:
√20
Or
2√5
Step-by-step explanation:
It is very easy just substitute
It will be:
In how many ways can you arrange the books A, B, C, and D on a bookshelf if books A and C must remain neighboring?
1 answer:
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Answer:
√20
Or
2√5
Step-by-step explanation:
It is very easy just substitute
It will be: