Answer :

Given two matrices are equal .i.e, A = B.


We know that if two matrices are equal then the elements of each matrices are also equal.


a + 4 = 2a + 2


a – 2a = 2 – 4


– a = – 2


a = 2 …… (1)


And 3b = b2 + 2


b2 – 3b + 2 = 0


b2 – 2b – b + 2 = 0


b(b – 2) – 1(b – 2) = 0


(b – 2)(b – 1) = 0


b = 2 or 1 …… (2)


And – 6 = b2 – 10


b2 = – 10 + 6


b2 = – 4


b = ±2i(No real solution) …… (3)


a = 2, b = 2 or 1


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