Resposta :
x^2 - 5x - 6 = 0
Fatorando
(x - 6)(x + 1) = 0
x - 6 = 0 x1 = 6
x + 1 = 0 x2 = - 1
S = {- 1 , 6}
calcula delta
b²-4ac
(-5)²-4.1.(-6)
25+24
49
-b+ou-raiz de delta/2a
-(-5)+ou-49/2a
5+ou-7/2
5+7/2=x'= 6
5-7/2= x"= -1
x ao quadrado -5x-6=0
x^2 - 5x - 6 = 0
Fatorando
(x - 6)(x + 1) = 0
x - 6 = 0 x1 = 6
x + 1 = 0 x2 = - 1
S = {- 1 , 6}
calcula delta
b²-4ac
(-5)²-4.1.(-6)
25+24
49
-b+ou-raiz de delta/2a
-(-5)+ou-49/2a
5+ou-7/2
5+7/2=x'= 6
5-7/2= x"= -1