Question

решите уравнение
14х^2-9х=0 25х^2=1

Answer 1

14х^2-9x=0                                               25х^2=1

x(14x-9)=0        Хпервое=0                      x^2=1/25 

14х-9=0                                                    x=1/5

14х=9                                                        x=0,2

х=9/14