This article is an extension to our fist article: ‘Squaring numbers-The better way!!’ We will demonstrate how to calculate squares using the simple identity-
This method is useful as it helps to break up the number into a multiple of 10 whose square is pretty use to find.
Eg. (76)2= (70+6)2=702+2(70)(6)+62=4900+840+36=5776
By splitting 76 into 70 and 6, we were able to calculate its square quickly, by simply using the identity.