Question

Resolva em R, as equações

c) 9x² + 2x + 1 = 0​

Answer 1

a = 9

b = 2

c = 1

$x=\frac{-b\±\sqrt{b^2-4ac}}{2a} \\\\ x=\frac{-2\±\sqrt{2^2-4*9*1}}{2*9} \\\\ x=\frac{-2\±\sqrt{4-36}}{18} \\\\ x=\frac{-2\±\sqrt{-32}}{18}$

x = $\frac{-2+\sqrt{-32}}{18}$ ou x = $\frac{-2-\sqrt{-32}}{18}$