а) х** + 2х - 63 = 0
х(х + 2) = 63
[x = 63 [x = 63
[x + 2 = 63 [x = 61
б)0.9x - 3x** = 0
3x(0.3 - x) = 0
[3x = 0 [x = 0
[0.3 - x = 0 [x = 0.3
в)2х** - 5х + 2 = 0
х(2х - 5) = -2
[x = -2 [x = -2
[2x -5 = -2 [x = 1.5
г)х** - 2х - 6 = 0
х(х - 2) = 6
[x = 6 [x = 6
[x - 2 = 6 [x = 8
а) х** + 2х - 63 = 0
х(х + 2) = 63
[x = 63 [x = 63
[x + 2 = 63 [x = 61
б)0.9x - 3x** = 0
3x(0.3 - x) = 0
[3x = 0 [x = 0
[0.3 - x = 0 [x = 0.3
в)2х** - 5х + 2 = 0
х(2х - 5) = -2
[x = -2 [x = -2
[2x -5 = -2 [x = 1.5
г)х** - 2х - 6 = 0
х(х - 2) = 6
[x = 6 [x = 6
[x - 2 = 6 [x = 8