Respuesta:
[tex](a - 4)(a + 3) = {a}^{2} - a - 12[/tex]
Explicación paso a paso:
[tex](a - 4)(a + 3) \\ {a}^{2} + 3a - 4a - 12 \\ {a}^{2} + (3a - 4a) - 12 \\ {a}^{2} - a - 12[/tex]
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Respuesta:
[tex](a - 4)(a + 3) = {a}^{2} - a - 12[/tex]
Explicación paso a paso:
[tex](a - 4)(a + 3) \\ {a}^{2} + 3a - 4a - 12 \\ {a}^{2} + (3a - 4a) - 12 \\ {a}^{2} - a - 12[/tex]