hellospanish
hellospanish
09-03-2017
Mathematics
contestada
W^2+5w=104
W^2 is w to the second power
Respuesta :
apologiabiology
apologiabiology
13-03-2017
minus 104 from both sides
w²+5w-104=0
ok, factor
what 2 numbers multiply to get -104 and add to get 5?
-8 and 13
(w-8)(w+13)=0
set to zero
w-8=0
w=8
w+13=0
w=-13
w=-13 or 8
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