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2x≤3
x≤3/2
Rpta : <-∞;3/2]
- 3x+2>5x-3
5>8x
5/8>x
x<5/8
Rpta: <-∞;5/8>
- (x-2)(x+4)<0
x₁: x<2
x₂: x<-4
Rpta: <-4;2>