Question

Решите уравнения срочно 7х=4х^

Answer 1

7х =4х²

7х -4х²=0

х(7 -4х)=0

уравнение имеет 2 корня     х =0                      7-4х=0

                                                                             -4х = -7

                                                                             х = 7/4