# Math Algebra

f(x)=x^3+4 f=1, f=-1
Are the answer to this 5 and 3
I must not understand

1. f(x)=x^3+4

f=1
f(1)=(1)^3+4
(1)^3=1 because 1X1X1=1
1+4=5
so f(1)=5

f=-1
f(-0)=(-1)^3+4
(-1)^3=-1
because -1x-1x-1=1x-1=-1
-1+4=3
so f(-1)=3

posted by Karine (:

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