Question

Q. Without actual squaring find the value of

Answer 1

heyy vaishali ur answer.............

Calculating square of any number is easy by doing multiplication but when u go to higher numbers like 21 etc in which multiplication is big and also difficult so u can break them in smaller form like you can write 21 as 20+1 and by using the formula (a+b)^2 as a^2+b^2+2ab

And by using this u can find the answer easily.....

so i directly written here answer.........1.83    and   2.215

hope it will help u............@kundan

Answer 2

this is your answer hope it helps you