$(a^3 – 1), (a^3 + 1), (a^2 – 3a + 2)$ এর ল.সা.গু. কোনটি?

( a - 1 ) ( a - 2 )

$a^6 - 1$

$(a^6 – 1 ) ( a - 1 )$

$a^2 -1$

Correct Answer not Found