Б)(2x - 1)(3x + 1) + x(1 - 2x) = 0
- (1 - 2x)(3x + 1) + x (1 - 2x) = 0
(1 - 2x)( - 3x - 1 + x) = 0
(1 - 2x)( - 2x - 1) = 0
1 - 2x = 0
- 2x = - 1
x = 1/2;
- 2x - 1 = 0
- 2x = 1
x = - 1/2;
Ответ:
- 1/2; 1/2
А)2х-3>0
2х>3
х>2:3
3х+2>0
х>-2:3
5+3х>0
х>-5:3
2х-3>0
х>3:2