Геннадьевич
7 год назад
(2х-1)*(2х+1)-(2х+3)^2 = 38 помогите
ОТВЕТЫ
Patapiy
Jul 5, 2019
(2х-1)*(2х+1)-(2х+3)²=38
4х²-1-4х²-12х-9=38
-10-12х=38
-12х=38+10
-12х=48
х=-4
4х²-1-4х²-12х-9=38
-10-12х=38
-12х=38+10
-12х=48
х=-4
( 2x - 1) * ( 2x + 1) - ( 2x + 3)^2 = 38
4
- 1 - 4 - 12x - 9 = 38
-1 - 12x - 9 = 38
-12x = 48 | : (-12)
X = -4
4
-1 - 12x - 9 = 38
-12x = 48 | : (-12)
X = -4
33
