Question

помогитеx решить пример                                                                                                   7 класс      (2x+1)*(2x-4)=0                                                                                                                

Answer 1

$(2x+1)(2x-4)=0 \\\ 2x+1=0 \\\ 2x=-1 \\\ x_1=- \frac{1}{2} =-0.5 \\\ 2x-4=0 \\\ 2x=4 \\\ x_2=2$
Ответ: 2 и -0,5