Resposta :
(x+3) . (x-2)
x² -2x +3x -6
x² +x -6= 0
a= 1 , b= +1 c= -6
▲= b² -4.a.c= (1)² -4.1.(-6)= 1+24= 25
x= (-b ± √▲)/2.a
x= (-(+1) ± √25)/2.1
x= (-1 ± 5 )/2
x'= (-1+5)/2= +4/2= +2
x"=( -1-5)/2= -6/2= -3
S+ 2 e -3
x² -2x +3x -6
x² +x -6= 0
a= 1 , b= +1 c= -6
▲= b² -4.a.c= (1)² -4.1.(-6)= 1+24= 25
x= (-b ± √▲)/2.a
x= (-(+1) ± √25)/2.1
x= (-1 ± 5 )/2
x'= (-1+5)/2= +4/2= +2
x"=( -1-5)/2= -6/2= -3
S+ 2 e -3