# If <span lang="EN

Given : and

Matrices A and B are of order 2 2.

To find : (3A2 – 2B + I).

Formula used :

Where cij = ai1b1j + ai2b2j + ai3b3j + ……………… + ainbnj

A2 is a matrix of order 2 x 2.

A =

A2 = =

A2 = =

3A2 = 3 × =

3A2 =

2B = 2 × =

2B =

I =

3A2 – 2B + I = + =

3A2 – 2B + I =

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