FIND THE SQUARE OF ANY NUMBER EASY WAY:-

Now we take a number ,square of 52
we take a method like this 

first we take it like 

we multiple first two number 2 and 2 =4 like

now we do cross multiple of two digit and then add like 2*5+5*2=20 

and take it 0 and 2 carry

we take 0 and carry 2

now we mumtiple last two digit and add carry like 5*5+2=27

so ans is 2704

  

ANOTHER METHOD IS 

WE CHOSE A BASE OF 25

52 IS MORE THEN 27 FROM 25 SO WE TAKE =27 

AND THE SQUARE OF 2 IS 04, SO WE TAKE 04

SO ANS IS 2704