Question

If a=0 , b= -1 a²+b²-2ab​

Answer 1

Answer:

a²+b²-2ab​ = 1

Step-by-step explanation:

a=0, b=-1

There are 2 ways to solve this- either by directly substituting the values, or by identity.

1. Identity

a²+b²-2ab​ = (a-b)²= [0-(-1)]²= (0+1)²= (1)²=1

2. Subs values directly in the eqn,

a²+b²-2ab​ = 0²+(-1)²-2(0)(-1)​ = 0+1-0 = 1

Hope it helps!