Question

номер 8а, срочно!!1!!1

Answer 1

l8-l-5(x+1)ll =8+2

8-l-5(x+1)l =10      или       8-l-5(x+1)l = -10

l-5(x+1)l= 8-10                     l-5(x+1)l=8+10

l-5(x+1)l=-2                           -5(x+1)=18       или   -5(х+1)=-18

корней нет                             -5х-5=18                   -5х-5=-18

                                                -5х=23                       -5х=-13

                                                 х=23:(-5)                     х=-13:(-5)

                                                  х=-4,6                         х=2,6

Ответ: -4,6;  2,6