Question

(l+b- 2c )^3
= {(l+b) - 2c}^3
= (l+b) ^3-3.(l+b)^2.2c+3.(l+b).(2c)^2-(2c)^3
=(l)^3+3(l)^2b+3.l.(b)^3
- 6c{(l)^2+2lb+b^2}+3l×4c^2+3×b
×4c^2-8c^3
=l^3+3l^2b+blb ^2+b^3-6cl^2-12lcb-8c^3(Answer)
​

Answer 1

Answer:

plz mark as a brilliant plz plz plz l HOPE to give brilliant 10=4

Answer 2

Answer:

yes this can be some using (a-b)3