Question

c) Simplify the following expression and find its value when a = -1,b=-2:
2 (a²+ a b ) +3-a b.​

Answer 1

Answer:

3

Step-by-step explanation:

2(a² + a b ) + 3 - a b

substituting the values of a and b

=> 2[(-1)² + (-1)*2)] + 3 - (-1)*2

=>2(1 + (-2)) +3 -(-2)

=> 2(1-2) + 3 +2

=> 2 * -1 +5

=> -2+5

=> 3 (ans)