Question

Решите уравнение (20x+21)(3-10X)=0

Answer 1

(20x+21)(3-10X)=0
1. 20x+21=0; 
20x=-21;
$x_1=-1 frac{1}{20}$

2. 3-10x=0
-10x=-3
$x_2= frac{3}{10}$