Question

ME AJUDEM, PARA HOJE.

Answer 1

x= (-5±√25-4x1x6)/2 <=> x =-3 v x=-2

x=(7±√49-4x12x1)/2 <=> x=4 v x=3

x=(-5±√25-4x1x4)/2 <=> x=-1 v x=-4

x^2 + x -12=0 <=> x= -1±√1-4x1x(-12))/2 <=> x=3 v x=-4