Решите пожалуйста задачу

Question

Решите пожалуйста задачу

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Answer 1

I hope this helps you

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Comments

I got it

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are you understand?

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thanks for your helping:) and sorry my mistake

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very good! Ok!!!!!!!!

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Who does nothing, he does not make mistakes

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Yes you are right

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sometimes I can't see my mistakes:D

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thanks for helping again:))

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с = 9.1 or not?

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c= square root of 10