emjsewe
emjsewe
27-03-2017
Mathematics
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what is the best method to solve
x^2 – 4x – 5 = 0
Respuesta :
Аноним
Аноним
27-03-2017
x^2 – 4x – 5 = 0
(x -5)(x +1) = 0
x - 5 = 0; x = 5
x +1 = 0; x = -1
answer: x = -1 and x = 5
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