Question

determine as raízes da equação
$x {}^{2} + 5x + 6$
​

Answer 1

Explicação passo-a-passo:

x²+5x+6=0

a=1

b=5

c=6

∆=b²-4ac

∆=5²-4×1×6

∆=25-24

∆=1

-b±√∆

-----------

2a

_______________

-5±√1

----------

2×1

_________________

-5±1

---------

2

___________________

x¹=-5+1. 4

------ = - ----. = -2

2. 2

__________________

x²= -5-1. 6

-------- = - --- = -3

2. 2

Answer 2

Resposta:

x² + 5x + 6 = 0

a = 1

b = 5

c = 6

∆ = b² - 4ac

∆ = 5² - 4.1.6

∆ = 25 - 24

∆ = 1

x = -b ± √∆

2a

x = -5 ± 1

2

x= -5 + 1

2

x= -4 ÷ 2

x = (-2)

____

x = -5 - 1

2

x = -6 ÷ 2

x = (-3)

_______

S:{(-2);(-3)}