Question

x ao quadrado -5x-6=0

Answer 1

 

 

x^2 - 5x - 6 = 0

 

Fatorando

 

(x - 6)(x + 1) = 0

 

x - 6 = 0                  x1 = 6

x + 1 = 0                 x2 = - 1

 

S = {- 1 , 6}

Answer 2

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