Find the value of the following expressions at a=1 b = -2 :
(i) `a^2+b^2+3ab`
(ii) `a^3+a^2b+ab^2+b^3`

Find the values of the following polynomials at a = -2 and b = 3 : a^2 - 2ab + b^2

Find the values of the following polynomials at a = -2 and b = 3 : a^2 + 2ab + b^2

Find the value of the following expressions for a=3,b=2. (i) a+b (ii) 7a-4b (iii) a^(2)+2ab+b^(2)( iv )a^(3)-b^(2)

Find the values of the following polynomials at a = -2 and b = 3 : a^2 + b^2 - ab- b^2-a^2

Find the values of the following polynomials at a = -2 and b = 3 : a^3 - 3a^2b + 3ab^2 - b^3

Find the values of the following polynomials at a = -2 and b = 3 : a^3 + 3a^2b + 3ab^2 + b^3

Find the values of each of the following expressions for a=1,b=2 and c=-1a^(2)+b^(2)+2ab( ii) 2a^(2)-b^(2)c+3abc

Find the value of the expression 3ab - 4a + 5 ,if a=4 and b = 2 .

Find the value of the expressions, when a= -1" and "b= 3 a^(2)+b^(2)+2ab

Simplify and find the value of the following expression when a=3 and b=1: 4(a^2+b^2+2a b)-[4(a^2+b^2-2a b)-{-b^3+4(a-3)}]