August 2019 1 11 Report
Calcule o valor das raízes reais.

a)
7 {x}^{2} + 2x + 3 = 0
b)
 {x}^{2} + 9x + 8 = 0
c)
 {5x}^{2} - 125 = 0
d)
 {7x}^{2} - 63 = 0
e)
 {x}^{2} + \frac{x}{12} - \frac{1}{12 } = 0
f)
 {x}^{2} - \frac{3}{8} - \frac{1}{16} = 0

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