а) (х-5)^2 х-5
= -
7(5-х) 7
а)
x^2 - 10x + 25 =(x-5)^2
35-7x=7(5-x)=-7(x-5)
(x^2 - 10x + 25)/(35-7x)=(x-5)/(-7)
б)
4x^2-12x+9=(2x-3)^2
(3-2x)^2=(-1)(-1)(2x-3)^2=(2x-3)^2
(4x^2-12x+9)/(2x-3)^2=1
