Wyznacz pierwiastki wielomianu a) W(x)=2x-1 b) W(x)=3(x+1)(x-2) c)W(x)=(2x-1)(5-x) d)W(x)=(0,02)-0,1x)(5x-2)
a)
b)
c)
d)
a) w(x)=2x-1
2x-1=0
2x=1
x=1/2
b) W(x)=3(x+1)(x-2)
x+1=0 i x-2=0
x=-1 i x=2
c)W(x)=(2x-1)(5-x)
2x-1=0 i 5-x=0
2x=1 i x=5
x=1/2 i x=5
d)W(x)=(0,02-0,1x)(5x-2)
0,02-0,1x=0 i 5x-2=0
0,1x=0,02 i 5x=2
x=0,2 i x=2/5
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a)
b)
c)
d)
a) w(x)=2x-1
2x-1=0
2x=1
x=1/2
b) W(x)=3(x+1)(x-2)
x+1=0 i x-2=0
x=-1 i x=2
c)W(x)=(2x-1)(5-x)
2x-1=0 i 5-x=0
2x=1 i x=5
x=1/2 i x=5
d)W(x)=(0,02-0,1x)(5x-2)
0,02-0,1x=0 i 5x-2=0
0,1x=0,02 i 5x=2
x=0,2 i x=2/5