x+5/x^2-5x-x-5/2x^2+10x=x-25/2x^2-50
2) 2/x+1-1/x-2=3x-11/(x+1)(x-2)
3) 1/x-1-3x^2/x^3-1=2x/x^2+x+1
4) 1+1/x+2=12/8+x^3
5) (x+1+1/x)^2=(x-1-1/x)
6) 1/x-5-3/x^2-6+5=5/x-1
Loga
Sinh Học lớp 12
