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IceJOKER [234]
3 years ago
11

A-2.5 2a-22.7 a+1.3 21.5 What’s a

Mathematics
1 answer:
rewona [7]3 years ago
8 0

Answer:

2.4

Step-by-step explanation:

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2-sqrt14/2, 2+sqrt13/2.

Step-by-step explanation:

What you do is you have to do the quadratic equation like it says in the problem.

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m²-2mn+n²-9r​

(m-n)^{2}-9r

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