jayy0378 jayy0378
  • 15-08-2019
  • Mathematics
contestada

What are the solutions of the quadratic equation 0 = -XP –
6x - 8?
O
2 and 4
-2 and 4
-2 and -4
2 and 4

Respuesta :

Gasaqui
Gasaqui Gasaqui
  • 17-08-2019

Answer:

-2 and -4

Step-by-step explanation:

The equation [tex]0=-x^{2}-6x-8[/tex]

Can be written as [tex]x^{2} +6x+8=0[/tex]

Lets apply quadratic equation solver:

that is. [tex]x=\frac{-b+/-\sqrt{b^{2}-4ac } }{2a}[/tex]

where a=1, b=6, c=8

We have [tex]\frac{-6+/-\sqrt{36-32} }{2}[/tex]

The solution is then

x= -2 and x= -4

Answer Link

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