Respuesta:
5a2 - 6ab - b2
Explicación paso a paso:
3a2 - 12ab - 3b2 +
2a2 + 6ab + 2b2
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Respuesta:
5a2 - 6ab - b2
Explicación paso a paso:
3a2 - 12ab - 3b2 +
2a2 + 6ab + 2b2
--------------------------
5a2 - 6ab - b2