Ответы и объяснения

2012-10-27T20:26:19+04:00

х4(2х-1)-10х2(2х-1)+9(2х-1)=0

(х4-10х+9)(2х-1)=0

х4-10х+9=0                                                  2х-1=0

                                                                     2х=1

                                                                    х=0,5