Find the value of the expression:
`a^2-ab-2a+5b` when a=2 and b=-3

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)}]

The value of the expression (5)/(3)x^(3)+1 when x=-2 is

When a=0 and b=-1 find the value of the given expressions : i) 2a+2b ii) 2a²+b²+1 iii) 2a²b+ab²+ab

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 value of : 6a^2b-5ab^2+10ab-7 given that a=1 and b=2

Find the value of : a + 2b - 5c when a = 2, b = -3 and c = 1

Find the value of 2a^2+b^2+5 when a=2 and b=-1

Find the value of : 3ab + 4bc - 5ca when a = 4, b = 5 and c =-2

If a ,b ,c are non-zero real numbers, then find the minimum value of the expression (((a^4+ 3a^2+1)(b^4+5b^2+1)(c^4+7c^2+1))/(a^2b^2c^2)) which is not divisible by prime number.

Find the values of each of the following expressions for a=1,\ b=2\ a n d\ c=-1. (i) a^2+b^2+2a b (ii) 2a^2-b^2c+3a b c