Question

PLISSS AYUDENMEE URGENTEE

Answer 1

Explicación paso a paso:

$(a + 2)(a - 2) - (a + 1)(a - 1) + (a + 3)(a - 3) =( {a}^{2} - 4) - ( {a}^{2} - 1) + ( {a}^{2} - 9) = {a}^{2} - 12$

Answer 2

Respuesta:

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