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odp. B
x=0
x+2=0 = x=-2
-x-3=0 = -x=3 => x=-3
3-x=0 =-x=-3 => x=3
zad8 odp. C
Pozdraiwnam
odp. B liczba 2
x=0
x+2=0 => x=-2
-x-3=0 => -x=3 => x=-3
3-x=0 =>-x=-3 => x=3
zad8 odp. C 3 pierwiastki
x²(x²-6x+8)=0
x²=0 => x= 0
x²-6x+8=0
Δ=36-32=4
x1=(6-2)/2=2
x2=(6+2)/2=4
x1=0, x2=2 x3= 4