# How to approximate several variable irreducible functions to reducible

$f:\{-1,1\}^n \rightarrow R$ with $f(x_1,x_2,x_3,\cdots,x_n)$ is any $d$ degree polynomial and irreducible then how to approximate $f$ to $g$ such that $g$ is reducible with distance between $f$ and $g$ is less. if it is not possible solution for at least $2$ degree polynomials.

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 Are you sure this is a Mathematica question and not a math question? – Verbeia Feb 26 at 10:10 "with distance between $f$ and $g$ is less." What does that mean? Less than what? – Gerry Myerson Feb 26 at 11:26