[6.34,,,],[hline,,,],[hline" Show that ",2b,b-c-alpha,2b],[,2c,2c,c-alpha-b,],[hline]

Show that: |[a-b-c,2a,2a],[2b,b-c-a,2b],[2c,2c,c-a-b]|=(a+b+c)^3

Show that abs[[a-b-c,2a,,2a],[2b,b-c-a,,2b],[2c,2c,,c-a-b]]=(a+b+c)^3

[" 8"," I "],[" M ",(1)/(*)],[,(4)/(4)],[,(9)/(2)],[,(9)/(9)],[,9],[hline,(4)/(3)],[+,9],[hline,1],[,7],[,3],[,9],[hline,1],[hline,-,(1)/(3)],[,,]

Show that ,,a+b+2c,a,bc,b+c+2a,bc,a,c+a+2b]|=2(a+b+c)^(3)

Show that ,,a+b+2c,a,bc,b+c+2a,bc,a,c+a+2b]|=2(a+b+c)^(3)