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-⅓x²<x
-⅓x² - x <0
x(-⅓x-1)<0
x=0 ⅓x-1=0
⅓x=1
x=3
trzeba namalowac oś , xE (0;3)
2))
(√6x)² + √3x >0
3)
1-x< x²
-x²-x+1<0
Δ=1+4=5 √Δ=√5
x₁=1-√5 /-2 x₂=1+√5 /2
4)
2-x> x ²
-x²-x+2>0
Δ= (-1)²-4*(-1)*2= 1 +8=9
x₁=1-3 /-2 =1 x₂=1+3 /-2 =-2
xE (-&;-2) u (1;&)