Question

prove that matrix please​

Answer 1

1. 》a-b-c+2b+2 c

a+b+c_ _ _ _ _ _ equation 1

2》2a+b-c-a+2 c

a+b+c_ _ _ _ _ equation 2

3》2a+2b+c-a-b

a+b+c_ _ _ _ _ equation 3

multiply equation 1,2,3

• (a+b+c )^3

Answer 2

Answer:

see attachment for the proof....