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Usernameunknowngo

Tema : Productos notables

[tex](x + 3) {}^{2} + (x + 1)(x - 7) - 2(x + 8)(x - 8) \\ x {}^{2} + 6x + 9 + x {}^{2} - 6x - 7 - 2(x {}^{2} - 64) \\ 2x {}^{2} + 2 - 2x {}^{2} + 128 \\ 128 + 2 = 130[/tex]

RSPTA:130

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