8x²-4x=0
4x(2x-1)=0
x=0 или 2х-1=0
2х=1
х=1/2
Ответ: 0; 1/2
4Х + 5 = 6 + 5 * ( X - 3 )
4X + 5 = 6 + 5X - 15
4X + 5 = 5X - 9
5X - 4X = 5 + 9
X = 14
64a³-27b⁶=(4a)³-(3b²)³=(4a-3b²)((4a)²+(4a)*(3b²)+(3b²)²=
=(4a-3b²)(16a²+12ab²+9b⁴)
(3n+2)³+(4n+5)³= (3n+2+4n+5)((3n+2)²-(3n+2)(4n+5)+(4n+5)²)=
=(7n+7)((3n+2)²-(3n+21)(4n+5)+(4n+5)²)=
=7(n+1)((3n+2)²-(3n+2)(4n+5)+(4n+5)²).
22-х>5-4x+8
-x+4x>13-22
3x>-9
x>-3
x принадлежит (-3; +бесконечность)