Rozwiąż nierówność:b) -3x kwadrat +5x<0
x(5-3x)<0
m.z. x=0 v 5-3x=0
3x=5
x=5/3
________0_________5/3________>x
_ _ _ + + + _ _ _
x∈(-∞;0)u(5/3;+∞)
Hej !
-3x kwadrat +5x<0
x(-3x+5x)<0
x+2x<0
3x<0/:3
x<0
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x(5-3x)<0
m.z. x=0 v 5-3x=0
3x=5
x=5/3
________0_________5/3________>x
_ _ _ + + + _ _ _
x∈(-∞;0)u(5/3;+∞)
Hej !
-3x kwadrat +5x<0
x(-3x+5x)<0
x+2x<0
3x<0/:3
x<0