a, (1+x)^2-(x-1)^2=0 b, 2/x-2-3/3-x=3x-20/(x-3)(x-2) c, x+1/2x-2-x-1/2x+2=2/x^2-1 d, 1/x^2-1+2/x-1=3/2x+2

a, (1+x)^2-(x-1)^2=0 b, 2/x-2-3/3-x=3x-20/(x-3)(x-2) c, x+1/2x-2-x-1/2x+2=2/x^2-1 d, 1/x^2-1+2/x-1=3/2x+2
Đăng phản hồi