It is known that 4 ^ 2 = a ^ 4,27 ^ 2 = 3 ^ B, instead of simple evaluation, (3a-2b) ^ 2 - (a-3b) (2a + b) + (3a + b) (3a-b)

It is known that 4 ^ 2 = a ^ 4,27 ^ 2 = 3 ^ B, instead of simple evaluation, (3a-2b) ^ 2 - (a-3b) (2a + b) + (3a + b) (3a-b)