Question

find the square of 31 and -71. can u pls show this answer in written​

Answer 1

Answer:

I can give you a trick to solve squares of 1 to 100.

Let s find 31 square by this method.

first 1.) always multiply both no. like 3×1=3

second 2.) to multiply this multiplied no. by 2 .

always .you will get 3× 2 = 6

Third 3.) do the square of the given 2 digits

like 3×3 = 9 and 1×1 = 1

fourth 4.) now write the square of the no. in 2

terms like 0901 and if the square is in

2 digits then write them as it is.

fifth 5.) now subtract the digit of 4th step and.

2nd step by leaving a gap of 1 no. after.

the no.

For eg.) 0901

- 6

_______

0961

And finally you will get the answer i.e. 961 of 31.

now you can find square of 71.

__________the end___________