Composition/Polynomial example/1/Exercise

Determine the composite functions ${}\varphi \circ \psi$ and ${}\psi \circ \varphi$ for the functions ${}\varphi ,\psi \colon \mathbb {R} \rightarrow \mathbb {R}$, defined by

$\varphi (x)=x^{4}+3x^{2}-2x+5\,\,{\text{ and }}\,\,\psi (x)=2x^{3}-x^{2}+6x-1.$

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