Ответ:
[tex]\frac{9}{x^2+xy+y^2}[/tex]
Объяснение:
[tex]\frac{9x-9y}{x^3-y^3}=\frac{9(x-y)}{(x-y)(x^2+xy+y^2)}=\frac{9}{x^2+xy+y^2}[/tex]
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Ответ:
[tex]\frac{9}{x^2+xy+y^2}[/tex]
Объяснение:
[tex]\frac{9x-9y}{x^3-y^3}=\frac{9(x-y)}{(x-y)(x^2+xy+y^2)}=\frac{9}{x^2+xy+y^2}[/tex]