Question

Evaluate a² – b² + 1 if a= -1 ,b= 2​

Answer 1

Step-by-step explanation:

a² – b² + 1

By taking the value of a = -1 , b = 2

$=(-1)^{2} - (2)^{2} + 1$

= 1 - 4 + 1

= -2  (Ans)