Question

Give answer of above question.

* Please answer step by step.
* Please don't post irrevelant answers , it's a humble request .​

Answer 1

hope it helps uh..... n solving more doubts follow me...

Answer 2

Answer:

-1

Step-by-step explanation:

Putting value of a = 1 and b = -2

So

a²+b²+3ab

(1)²+(-2)²+3×1×(-2)

1+4-6

-1