# JEE Matrices (1)

Algebra Level pending

$$\text A$$ and $$\text B$$ are two square matrices such that $$\text A^2 \text B = \text{BA}$$.

If value of $$\text{(AB)}^{10}$$ can be expressed in the form $$\text A^k \text B^{10}$$, find the value of $$\dfrac {k+1}{128}$$.

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