\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
For \(A = X^4 - X^3 - X^2 + 1\) and \(B = X^3 - X\) in \(\mathbb{R}[X]\), compute \(A \wedge B\) and a Bézout pair.
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