Question

14. If A is a square matrix such that A^2 = A, then write the value of (I + A)^2 - 3A.
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Answer 1

Step-by-step explanation:

hope this is helpful to you

Answer 2

Answer:

1(or)I

Step-by-step explanation:

given A^2=A that means A=I-(1)

then (I+A)^2-3A=I^2+A^2+2IA-3A

FROM (1)

=I+I+2I^2-3I

=2I^2-I

SINCE I Is an identity matrix i=1

=2-1=1