Q 65 (EXAMPLAR) If A isa square natrix such that A2=I, then A-I3+A+I3-7A is equals to (a) A (b) - Maths - Matrices

Question

Q 65 (EXAMPLAR) If A isa square natrix such that A
2 = I ,   t h e n   A - I 3 + A + I 3 - 7 A is equals
to
(a) A
(b) I - A
(c) I + A
(d) 3 A

Shilpa Patel · Accepted Answer

Q.65. (EXAMPLAR) If A isa square natrix such that A 2 = I , t h e n A - I 3 + A + I 3 - 7 A is equals to (a) A (b) I - A (c) I + A (d) 3 A