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HornerForm

HornerForm[poly]
puts the polynomial poly in Horner form.

HornerForm[poly, vars]
puts poly in Horner form with respect to the variable or variable list vars.

HornerForm[poly₁/poly₂]
puts the rational function poly₁/poly₂ in Horner form by nesting poly₁ and poly₂.

HornerForm[poly₁/poly₂, vars₁, vars₂]
puts poly₁/poly₂ in Horner form using the variables or variable lists vars₁ and vars₂ for poly₁ and poly₂ respectively.

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When variables are not specified, HornerForm puts the polynomial or rational function into Horner form with respect to the variables identified using Variables.

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