Question

If a is an invertible matrix and a2 a + i = 0, then the inverse of a is

Answer 1

Step-by-step explanation:

A2+A+I=0

MULTIPLE EQUATION BY A^-1

AI+I+IA^-1=0

IA^-1=-I(1+A)

HENCE,

Ainverse A^-1=-1-A

HOPE HELPFUL