If `[a b c]=2`, then find the value of `[(a+2b-c)(a-b)(a-b-c)]`.

If ab + bc + ca = 0, then find the value of (b)/((a+b)(b+c))+(c)/((a+c)(c+b))+(a)/((a+b)(c+a))

If a,b , c are in AP, then, find the value of (a-c)^2/(b^2-ac)

Let a,b,c belong to R and a!=b!=c then find the value of ((a-b)^(2))/((b-c)(c-a))+((b-c)^(2))/((a-b)(c-a))+((c-a)^(2))/((a-b)(b-c))

Let a,b,c belong to R and a!=b!=c then find the value of ((a-b)^(2))/((b-c)(c-a))+((b-c)^(2))/((a-b)(c-a))+((c-a)^(2))/((a-b)(b-c))

If a + b + c = 0 , then find the value of ( ( a + b ) / c + ( b + c )/a + ( c + a ) / b ) times ( a /( b + c ) + b /( c + a ) + c /( a + b ) ) is :

If a+b+c=0, find the value of (a+b)/(c)-(2b)/(c+a)+(b+c)/(a)