Question

(a+b)^3-8(a-b)^3 factorise pls answer it is urgent

Answer 1

Step-by-step explanation:

3a³+3b³+9ab-8a³+8b³-8ab

-5a³+11b³+ab

5a³-11b³+ab=0

Answer 2

Answer:

equation at the end of step  1  :

 ((a + b)3) -  8 • (a - b)3

Step  2  :

2.1     Evaluate :  (a+b)3   =    a3+3a2b+3ab2+b3  

2.2     Evaluate :  (a-b)3   =    a3-3a2b+3ab2-b3  

Checking for a perfect cube :

2.3    -7a3+27a2b-21ab2+9b3  is not a perfect cube  

Final result :

 -7a3 + 27a2b - 21ab2 + 9b3

hope it helps you buddy!!

:)