F(x) =(x+1)^3 - (x-1)^3 represent a function?

Answers (1)

f(x)=(x+1)^3-(x-1)^3=x^3+3x^2+3x+1-(x^3-3x^2+3x-1)
=6x^2+2 is a quadratic function,where xgeq 2

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