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Prasanth kumar Kamisetty

CA Foundation

★ 11K+

03-Aug-20 20:50

Which solution are you referring too?

sudha reddy

Moderator

04-Aug-20 15:39

This is the sum which sir delt in one of the videos

Prasanth kumar Kamisetty

CA Foundation

★ 11K+

04-Aug-20 16:05

Kindly refer to the video in which this was solved and also mention the observation you have in the solution

sudha reddy

Moderator

05-Aug-20 10:04

It is the 13 th video in eqns chapter and also the starting sum

Prasanth kumar Kamisetty

CA Foundation

★ 11K+

05-Aug-20 10:13

What is your observation in those problems

sudha reddy

Moderator

05-Aug-20 10:30

If I follow the procedure sir followed I'm getting answer. But I used another formula and I'm not getting answer So pls tell me where did I do wrong

Prasanth kumar Kamisetty

CA Foundation

★ 11K+

05-Aug-20 10:33

We have some of roots as -b/a we do not know difference of roots so cannot apply what you have done and also U have take a^3-b^3 as (a-b)^3+3ab(a-b) but u took -3ab

sudha reddy

Moderator

06-Aug-20 08:56