Question

find the least number that must be subtracted from 7581

Answer 1

the least number that must be subtracted from 7581 to make it a perfect sq. is 12.

7581-12 = 7569

√7569 = 87
therefore 7569 is the perfect sq. of 87

Answer 2

Hi

First, think about what no. give the square value of this no.

let findout.

(7581)^1/2=87.06

here we a going to substract then we have make it 87 perfect square.

(87)^2=7569

hence
7581-7569=12

so we substrate 12 to make 87 perfect square.

hope it help.