Question

8. Prove that if x and y are both odd positive integers then x² + y² is even but not divisible by 4​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

(2a+1) & (2b+1) because if we add 1 to any even no. it will be odd. 4 Is not a multiple of 2 it means clearly that 4 is not multiple of x²+y² , so x²+y² is even but not divisible by 4. Hence proved.

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