If A = [1 -1; 3 2] and B = [2 -2; -1 -2], then which of the following is/are correct ?

1.AB (A⁻¹B⁻¹) is a unit matrix.

2.(AB)⁻¹ = A⁻¹ B⁻¹.
Select the correct answer using the code given below :

Mathematics 2016 NDA Mathematics 2016 NDA 2016

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