Question

Pls tell me answer of 9 sum

Answer 1

SOLUTION (9) :

The solution to question 9 is posted in the above picture. It is nothing but some tricks is required to solve this question.

REMEMBER :

[1] We have ussd the formula :

We have ussd the formula : A³+B³+C³-3ABC = (A+B+C) (A²+B²+C²-AB-BC-CA) here for a proceeding the steps awesomely.

[2] We used the above formula till the ending of the solution and we also put the value of the given algebric expressions in proper place.

[3] Again we start proceeding the steps and as we know very well about solving INDICES, there's no problem in proceeding the steps with complex figures from indices.

[4] Ultimately our answer comes 27abc which means that according to your question, option (4) is correct.