Question

I need it's answer fast​

Answer 1

Answer:

Option D is correct (I-A)

Step-by-step explanation:

A2 - A + 1 = 0

1 = A - (A x A)

1A-1 = AA-1 - A (AA-1)

A-1 = 1-1

Answer 2

Answer:

A^-1(A^2-A+1)=(0)A^-1

A^2×A^-1 - A×A^-1 + I×A^-1 =0×A^-1

A-I+A^-1=0

Therefore,

A^-1= I-A