Question

prove that for any natural number ending in 3 ,its square ends in 9

Answer 1

very simple.
let x be the end=3 is a multiple of 3
3²=9
9 is also a multiple of 3.

13²=169 is multiple of 3
bcz 9 is the square of 3.
thanks

I hope it will be helpful

I expect the BRAINLIEST.

Answer 2

$13 =^{2} 169 \\ 23 ^{2} = 529$
hope helped