if X+y are both odd then x²+ y2 is even but not possible by 4
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Answer:
Because 4 is even
Step-by-step explanation:
Your question straight away says that x^2 an y^2 give an even answer when they are both odd
You cannot choose 4 because it is an even number.
In the equation any even number taken will give an even answer.
It is only correct with odd numbers
Again: 4 is not an odd number
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