" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
x - y
x³ -y³ | x - y
-x³ +x²y x²+ xy + y²
// +x²y
-x²y +xy²
// +xy² -y³
-xy² +y³
// //
Comprobamos:
( x - y ) ( x² +xy + y² ) = x³ +x²y +xy² -x²y -xy² -y³
= x³ -y³