Question

Please help me to solve 7 questions

Answer 1

Answer:

Step-by-step explanation:

Let us substitute x=0, since it will eliminate one additional term ('x' term) in the expansion of the determinant.

If we substitute x=0, we get  

△=(2w  

2

−1)−w(2w−w  

2

)+w  

2

(w−w  

4

)

=2w  

2

−1−2w  

2

+w  

3

+w  

3

−w  

6

 

=−1+2−1 ...since w  

3n

=1

=0