Respuesta :

Ckaranja
[tex] \frac{2}{5(x-4)} =2x [/tex]
=[tex] \frac{2}{5x-20} =2x[/tex]
2=2x(5x-20)
2=10[tex] x^{2} -40x[/tex]
[tex]10 x^{2} -40x-2=0[/tex]
=-b+-[tex] \sqrt{ (b^{2}-4ac)/2a } [/tex]
=42.05

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