after solving equation..

(%i1) 1+(x+m)=(x+1)^2-x*(x+m);
                                          2
(%o1)                  x + m + 1 = (x + 1)  - x (x + m)
(%i2) solve([%], [x]);
                                          m
(%o2)                            [x = - -----]
                                        m - 1
(%i3) 


ok I solved that equation, but is it possible also display something that says:  m != 1 ?