Al realizar la operación (a + 3) (a - 1) se obtiene:
a) a2 + 3a - 1
b) a2 - 3a + 1
c) a2 - 2a - 3
d) a2 - 2a - 1
a) a2 + 3a - 1
b) a2 - 3a + 1
c) a2 - 2a - 3
d) a2 - 2a - 1
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c) a²-2a-3
espero te sirva