Question

помогите очень надо 15 б дам

Answer 1

(x - 25 / 5x - 25) - (3x + 5 / 5x - x^2)= (x-25/5(x-5))-(3x+5/x(5-x))=(x-25/5(x-5))+(3x+5/x(x-5)=(x^2-25x+15x+25)/5x(x-5)=(x^2-10x+25)/5x(x-5)=((x-5)(x-+5))/5x(x-5)=(x-5)/5x