formula -b mas o menos raiz de b^2 - 4(A)(C)
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2(a)
a=12
b= -48
c= 39
=-(-48)+- raiz (-48)^2 - 4(12)(39)
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2(12)
=48+-raiz 2304 - 1872
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24
=48+- 20.78
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24
dos respuestas
1. 48+20.78
------------
24
= 2.86
2- 48 - 20.78
--------------
24
=1.13
suerte y saludos