(3/5a^5b-2/3a^3b^4)^2

Question

(3/5a^5b-2/3a^3b^4)^2

Answer 1

5а - 4b = 0 => 5a = 4b => b = 5a/4
(3a - 5*5a/4):(2a - 3*5a/4) = (12a - 25a)/4 : (8a - 15a)/4 = -13a/4 * (-4/7a) = 13/7