Question

 (430²-26²):456

(827²-26²):853 как такое решать????

 

 

 

 

 

 

 

 

 

 

 

Answer 1

(430²-26²):456 = (430-26)(430+26)/456  = 404*456/456 = 404
(827²-26²):853  = (827-26)(827+26)/853  =821*853/853=821