This question was asked in Ex 1.3 , 9

After this step I can't understand 9(X1 X2) (x1-x2) 6(x1-x2)=0 

Query from 
Ex:1.3
9th question
Class 11
Lakshay pranav's image
Lakshay pranav
March 10, 2021, 5:39 a.m.

Answer the question...

Lakshay pranav's image