HOW TO CALCULATE SQUARE OF ANY 2 DIGIT NUMBER

LETS TAKE AN EXAMPLE OF ANY 2 DIGIT NUMBER

Let us take 57

so, (57)^2

first of all square the unit place number i.e, 7

and its square is 49

Then square tens place number i.e, 5

and its square is 25

and then take 5 and 7 and multiply them 7*5=3 and 

also multiply 35 by 2 i.e,35*2=70

now write in this format 

25  70  49

now take 4 of 49 and add it to the left of 49 i.e, 70

but you have add in 0 i.e, 0+4=4

and now take 7 of 70 and add it to 25 i.e, 25+7=32

so, 

the square is 3249.