03-04-2020
Mathematics

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5x2 - 4x – 9 = 0
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Respuesta :

surjithayer10 surjithayer10

03-04-2020

Answer:

Step-by-step explanation:

5×-9=-45

-9+5=-4

5x²-4x-9=0

5x²-9x+5x-9=0

x(5x-9)+1(5x-9)=0

(5x-9)(x+1)=0

x=-1,9/5

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