Question

Na função F(x) = - x² +3x -2, Determine o valor de F(1)

Answer 1

Resposta:

x1 = $\frac{-3-\sqrt{21}}{2}$

x2 = $\frac{-3+\sqrt{21}}{2}$

Explicação passo a passo:

1=-x²+3x-2

3-x²-3x=0

-x²-3x+3=0

x = $\frac{-3+-\sqrt{3^{2} -4.1.(-3)}}{2.1}$

x = $\frac{-3+-\sqrt{9-4.(-3)}}{2}$

x = $\frac{-3+-\sqrt{9+12}}{2}$

x = $\frac{-3+-\sqrt{21}}{2}$

x1 = $\frac{-3-\sqrt{21}}{2}$

x2 = $\frac{-3+\sqrt{21}}{2}$