Explicación paso a paso:
a(a+7)+15 = (a+1)(a+3)
a²+7a+15 = a²+4a+3
7a+15 = 4a+3
3a = -12
a = -4
piden a +3
-4+3 = -1
Respuesta : -1
bye xd
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Explicación paso a paso:
a(a+7)+15 = (a+1)(a+3)
a²+7a+15 = a²+4a+3
7a+15 = 4a+3
3a = -12
a = -4
piden a +3
-4+3 = -1
Respuesta : -1
bye xd