A) 4.6(2x+0.5)=8x-3x-4
9.2x +2.3 -5x = -4
4.2x = -4 -2.3
4.2x= -6.3
x= -1.5
Б) (x +4)²=x(x +3)
x² +8x +16 =x² +3x
x² +8x -x² -3x = -16
5x= -16
x= -16/5
x= -3.2
В) 10-x(5-6-x)=x(x+3) -4x
10 -x(-1-x) =x² +3x -4x
10 +x +x² =x² -x
x +x² -x² +x = -10
2x= -10
x= -5