Question

Математика...............

Answer 1

Ответ &/$##@@#$//$##@@@#$9

Answer 2

(3a-4b)(3a+4b)[2(2,25a²+6ab+4b²)]=(3a-4b)(3a+4b)/[2(1,5a+2b)²]=
=3(1,5a+2b)(3a-4b)/[2(1,5a+2b)²]=3(3a-4b)/[2(1,5a+2b)=(9a-12b)/(3a+4b)