If a = 2, b = 3, and c = 4, find value of `(a(b+c))/(b(a+c))`

If a = 2 , b = -2 and c = 2 , then find the value of a^2b + b^2c + c^2a

If a=4, b=-3, c=2 , find the value of 4a^(2)+5b-12c ..

If [a b c]=2 , then find the value of [(a+2b-c)(a-b)(a-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 ab + bc + ca = 0, then find the value of (b)/((a+b)(b+c))+(c)/((a+c)(c+b))+(a)/((a+b)(c+a))