Oblicz wartość funkci dla argumentów -1 oraz 2.
a) f(x)= x+5
b) f(x)= x ^3+x
c) f(x)= (x+1)(x-2)
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a)
f(-1)=-1+5
f(-1)=4
f(2)=7
b)
f(-1)= -1
f(-1)=-2
f(2)=
f(2)=6
c)
f(-1)=(-1+1)(-1-2)
f(-1)=0
f(2)=(2+1)(2-2)
f(2)=0