Saved Bookmarks
| 1. |
a3-b3= |
|
Answer» (a a³ – b³ = (a – b)(a² + ab + b²)you know that(a – b)³ = a³ + 3ab(a – b) – b³then a³ – b³ = (a – b)³ + 3ab(a – b)= (a – b)[(a – b)² + 3ab]= (a – b)(a² – 2ab + b² + 3ab)= (a – b)(a² + ab + b² ) 3(a-b) (a-b)3 - 3ab(a-b) |
|