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3x/12+x+2/3
4x+12x +8
16x- 24x
-8x
x
x
x ∈ <1 3/8 ; +∞)
2.
-x
-x(
-x(
-x (
-x
-x=0 x-2=0 x-4=0
x1=0 x2=2 razy dwa x3=4
rysunek
odp. x ∈ <0;4>
3.
(
x1=3 x2= -3 x3=2
x ∈ <-3 ; 2> u <3; +∞)
zaraz zrobię jeszcze rysunek do 2, 3