Question

PT da thuc thanh nhan tu:

                               a(a+2b)³ - b(2a+b)³

Answer 1

= a( a³ + 6a²b + 12ab² + 8b³ ) - b( 8a³ + 12a²b + 6ab² + b³)

= a⁴ + 6a³b +12a²b² + 8ab³ - 8a³b - 12a²b² - 6ab³ - b⁴

= a⁴ - 2a³b + 2ab³ -b⁴

= (a² + b²) (a² - b²) - 2ab² (a - b)

= (a² + b²) (a + b) ( a - b )- 2ab ( a - b )

= ( a - b) ( (a² + b²)( a + b )- 2ab)  

Answer 2

-(b-a)³*(b+a)

Answer 3

#thang: cho mk xin cach giai

Answer 4

Nguyễn Việt hoàng sai bét nhân tử kia mà

Answer 5

<=>(a²+2ab)³-(b²+2ab)³

=>-(b-a)³(b+a)

Answer 6

Dao Ngoc Hoa sai roi ban oi