wyznacz miejsca zerowe funkcji
a). y=2x-4
b). y=x-5/ x do kwadratu +5
c). f(x) = x do kwadratu -3/ x+3
y=2x- 4
2x-4=0
2x=4
x=2
y=2x-4
2x-4=y|* y
2xy-4=0 |*xy
2-4=xy
-2=xy
xy=-2|* -2
-2xy=0
y=5x +5x
10x=y|:10
x=y/10
fx=^2 -3/x+3
fx=-1/3x
fx3=1
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y=2x- 4
2x-4=0
2x=4
x=2
y=2x-4
2x-4=y|* y
2xy-4=0 |*xy
2-4=xy
-2=xy
xy=-2|* -2
-2xy=0
y=5x +5x
10x=y|:10
x=y/10
fx=^2 -3/x+3
fx=-1/3x
fx3=1