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09-03-2017
Mathematics

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W^2+5w=104

W^2 is w to the second power

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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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