люди добрые и неочень!!)хелп!!!!!!!!!!!!!!!!!!!!!!!!

           _                               +                        -                                   +

______________-3_____________0_______________1____________________

(2x-5)(x+7)(x+1)>0

2(x-2,5)(x+7)(x+1)>0

       -                +                                   -                           +

_______ -7______________ -1_____________ 2,5____________________

,т.к.

, т.к.

7-6x=6(7/6 -x)<0

        +                              -

------------ 7/6---------------

  -*+*-=+                        -*-*-=-