Hellow guys, Welcome to my website, and you are watching Ratio and Proportion l Given a:b = 7:5 find (a^2+b^2):(a^2-b^2) #maths #mathematics. and this vIdeo is uploaded by Deepak Kumar [ IIT-BHU ] - WifiLearn Academy at 2025-02-09T20:33:48-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.