Question

5) Resolva a equação incompleta: 6x2 + 4x = 0

a) X=0, X2=-2
b)x1=0, X2=-2/3
c) x1=6, X2=-4
d) x1=0, x=-3/2​

Answer 1

Explicação passo-a-passo:

$6x {}^{2} + 4x = 0$

$6x {}^{2} + 4x = 0( \div 2)$

$3x {}^{2} + 2x = 0$

$x(3x + 2) = 0$

$3x + 2 = 0$

$3x = 0 - 2$

$3x = - 2$

$x = > - \dfrac{2}{3}$

$s = > ( \: \: 0 \: \: e \: - \dfrac{2}{3} )$

Opção "B"