Respuesta :

Answer:

[tex]8x^3+4x^2+7x-7[/tex]

Step-by-step explanation:

[tex](10x^3+7x^2-7)-(2x^3+3x^2-7x) \\ \\ =10x^3 + 7x^2 - 7-2x^3-3x^2+7x \\ \\ =8x^3+4x^2+7x-7[/tex]

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