Mathematics: For a certain positive integer n, n^2 gives a remainder of 4 when divided by 5, and n^3 gives a remainder of 2 when divided by 5. what remainder does n give when divided by 5?

For a certain positive integer n, n^2 gives a

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makayla4141

07.01.2022

Mathematics

N^3 - n^ = -2 = 3 mod 5 => n^2(n-1) = 3 mod 5 8 = 3 mod 5, n^2 = 4 mod 5 => n-1 = 2 mod 5 so n = 3 mod 5

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Ответ:

2936131

24.10.2022

Mathematics

The answer is B.C. =8.1cm
The working is on the picture
ABCD is a quadrilateral. Work out the length of BC.

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For a certain positive integer n, n^2 gives a remainder of 4 when divided by 5, and n^3 gives a remainder of 2 when divided by 5. what remainder does n give when divided by 5?

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