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a= -1
b= -1
2a²-b³=2 * 1 - (-1) = 2 + 1 = 3
b)
a= 1
b = -1
2*1 - (-1)= 2 + 1=3
c)
a= -1
b=1
2*1 - 1= 1
d)
To samo co w b)
e)
a=-2
b=2
2 * 4 - 8 = 0
f)
a = 2
b = -2
2*4 - (-8) = 8 + 8=16
Koleżanka wyżej ma źle podpunkt c