Respostas

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  • Ambicioso
2013-12-12T17:53:08-02:00
4x² - mx + 2 = 0 (a = 4 , b = -m , c = 2)
x' + x'' =  \frac{-b}{a}

5 =  \frac{-(-m)}{4}

m = 5.4 
m = 20