решить уравнения 1)2х/х+1+3х/х-1=6х/х2-1 2)х-1/х-2-2/х=1/х-2 3)(х-3)*(х-5)=3(х-5) 4)(х-2)*(х2+1)=2(х2+1) решить 43 45 46 58

x-1    2         1                              x(x-1)-2(x-2)-x=0

___ - __ =  ____                            x*2-x-2x+4-x=0

x-2     x      x-2                              x*2-4x+4=0

                                                    d=16-16=0

                                                    x=2