załącznik ;**********
Z GÓRY BARDZOOO DZIĘKUJĘ ! ;************************************
b)f(x) = 5x +(b-2)/4
f(x)=0 <=> x<0
5x +(b-2)/4=0
5x=-(b-2)/4
x=-(b-2)/20
-(b-2)/20<0
-b+2<0
-b<-2
b>2
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b)f(x) = 5x +(b-2)/4
f(x)=0 <=> x<0
5x +(b-2)/4=0
5x=-(b-2)/4
x=-(b-2)/20
-(b-2)/20<0
-b+2<0
-b<-2
b>2