Question

plz answer this question plz , this is a matrix sum .​

Answer 1

Answer:

( a + b + c )³

Step-by-step explanation:

Solution---->

1) Plzzz see the attachment

2) First we add all three rows in place of first row ie

R₁ ---------> R₁ + R₂ + R₃

3) Now in 3rd step we take ( a + b + c ) as common from first row .

4) In fifth step we do ,

C₂ ------> C₂ - C₁ and C₃ -------> C₃ - C₁

Applying it we get two zeroes in first row

5) In 8th step we expand determinant by first row and get the answer