Question

Решите уравнение (x+1,6)(x+0,2)(x-9)=0
(x-7)(x+3)(x-4)=0

Answer 1

$(x+1,6)(x+0,2)(x-9)=0\\(x+\frac{8}{5})(x+\frac{1}{5})*(x-9)=0\\x_1=-\frac{8}{5}\\x_2=-\frac{1}{5}\\x_3=9$

$(x-7)(x+3)(x-4)=0x-7=0\\x+3=0\\x-4=0\\x_1=7\\x_2-3\\x_3=4$