Question

How to find the square of 25 square without actual multiplication

Answer 1

$25^2 \ that \ can \ also \ be \ written \ as \ (20+5)^2\\\\ (a+b)^2 =a^2+2ab +b^2\\\\here , \ a = 20 , \ b = 5 \\\\(20+5)^2 = 20^2 + 2 * 20 * 5 + 5^2\\\\(20+5)^2 = 400 + 200 + 25 = 625\\\\hope \ it \ helps \ !!$