[tex] 64a^2b^{36} -1 [/tex]
[tex]= (8ab^{18})^{2} - (1)^2 [/tex]
[tex]=(8ab^{18} - 1)(8ab^{18} + 1)[/tex]
----------------------------------------------------------
Answer: (8ab¹⁸ - 1)(8ab¹⁸ + 1) (Answer 3)
----------------------------------------------------------
