Tìm phân thức D, biết: (x-1)^2-6(x-1)+9/3x^2-3x.D=x^2-16/3x^3-3x
Giải thích
D=x−12−6x−1+93x2−3x:x2−163x3−3xD=x−12−6x−1+323x.x−1.3x3−3xx2−16D=x−1−323x.x−1.3xx2−1x2−42
D=x−423x.x−1.3x.x−1.x+1x−4.x+4
D=x−4x+1x+4
D=x−12−6x−1+93x2−3x:x2−163x3−3xD=x−12−6x−1+323x.x−1.3x3−3xx2−16D=x−1−323x.x−1.3xx2−1x2−42
D=x−423x.x−1.3x.x−1.x+1x−4.x+4
D=x−4x+1x+4