Question

factorise a 3 + 8 b 3 - 3 + 6 ABC​

Answer 1

Answer:

Using identity x3+y3+z3−3xyz=(x+y+z)(x2+y2+z2−xy−yz−zx)  

Which gives

a3−b3+8c3−6abc=(a−b+2c)(a2+b2+4c2+ab+2bc−2ca)