Question

срочноооо!!!!!!!
дам 90 балов​

Answer 1

Ответ:

1) 4(8-7х)=-7(2х-6)

32-28х=-14х+42

-10=14х

х=-10/14

х=-5/7

2) 18х=(3х+5)(6х-5)

18х=18х²+15х-25

18х²-3х-25=0

D=9+1800=1809

х1=3+√1809/36=1+√201/12

х2=3-√1809/36=1-√201/12