Question

Find the square of the following number by both methods without actual and with actual multiplication number is 28​

Answer 1

Step-by-step explanation:

The square of 28 can be found by multiplying it by itself that is 28×28 = 784

And another method is we know the square of 25 is 625 we will add (25+25+1) in it to get the square of 26 that will be 676 then to get the square of 27 we will add (26+26+1) which will be 729 and the last one, to get the square of 28 we will add (27+27+1) in it to get 784 which is our desired answer.