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Efectuati : x^2-7x supra x^2-4x : 2x^3-14x^2 supra 3x-12

Răspuns :

(x^2-7x)/(x^2-4x):(2x^3-14x^2)/(3x-12)=
=[x(x-7)]/[x(x-4)]*[3(x-4)]/[2x^2(x-7)]=
=3/2x^2