Question

x²-1/4x-2x²/8=0
valendo 20 pontos

Answer 1

$x^2 - \frac{1}{4}x - \frac{2x^2}{8} = 0 \\ \\ -\frac{3x^2}{4} - \frac{x}{4} = 0 \\ \\ \frac{x}{4}(-3x - 1) = 0 \\ \\ \frac{x}{4} = 0 \\ \\ x = 0 \\ ou \\ \\ \\ -3x - 1 = 0 \\ -3x = 1 \\ x = -\frac{1}{3}$