(2a-4b):(0.2a^2-0.8b^2)
=[2(a-2b)] / [0.2(a² - 4b²)] = [2(a-2b)] / [0.2 (a-2b)(a+2b)] = = 10 / (a+2b)
(2a-4b):(0,2aˇ2 -0,8bˇ2) = 2(a-2b)/0,2(aˇ2-4bˇ2)=10(a-2b)/(a+2b)(a-2b)= =10/(a+2b)