Question

encontre as raizes da equacoes:
A) x²-2x-2x-4
B) x²-2x=x+4
DOU 50 PONTOS POR ESSA PQ TO PRECISANDO UUURGENTE OBG

Answer 1

A)$x^{2} +(-2-2)-x=-4$
$x^{2} +(-4)=x-4$
$x^{2} +(-4)=x-4$
$x^{2} -4=x-4$
$x^{2} -4=-4!$

B) $x^{2} -2x-x-4=0$
$x^{2} +(-2-1)x-4=0$
$x^{2} +(-3)x-4=0$
$x^{2} -3x-4=(0)$

(0=0) ?