Question

pls solve this problem as soon as possible Q24

Answer 1

Euclids' a=bq+r
may help you
hope you will get my friend

Answer 2

We know that any odd positive integer is of the form 2q+1, where q is an integer. 

So, let x=2m+1 and y=2n+1, for some integers m and n. 

we have x2+y2

x2+y2=(2m+1)2+(2n+1)2

x2+y2=4m2+1+4m+4n2+1+4n=4m2+4n2+4m+4n+2

x2+y2=4(m2+n2)+4(m+n)+2=4{(m2+n2)+(m+n)}+2

x2+y2=4q+2, when q=(m2+n2)+(m+n)

x2+y2 is even and leaves remainder 2 when divided by 4. 

x2+y2 is even but not divisible by 4.