=(4ab( 3a + 2b))\ (3a-2b)(3a+2b)= 4ab \ 3a - 2b
= ((6c-5)^2)\ (5-6c)(5+6c) = (6c-5)^2 \ -(6c-5)(6c+5) = 6c-5 \ 6c+5
=(4ab( 3a + 2b))\ (3a-2b)(3a+2b)= 4ab \ 3a - 2b
= ((6c-5)^2)\ (5-6c)(5+6c) = (6c-5)^2 \ -(6c-5)(6c+5) = 6c-5 \ 6c+5