maddison4825 maddison4825
  • 02-05-2022
  • Mathematics
contestada

Solve x² + 11x +18=0 by factoring.
A
x = 3 or x=6
B
x=-6 or x = -3
C
x = 2 or x = 9
D
x = -9 or x = -2

Respuesta :

Mirenim Mirenim
  • 02-05-2022
-(11+sqrt(121-4*18))/2 = -(11 +sqrt(49))/2 = -9

Or

-(11-sqrt(121-4*18))/2 = -(11-sqrt(49))/2 = -2

D is the answer
Answer Link

Otras preguntas

You are given two solid materials one that is organic and one that is not organic. Describe three tests you could perform to help you decide which is which.
The frequency of violet light is 7.5x10 to the 14th power hertz. What is the wavelength?
What is a list of countries without volcanoes?
what does diametor mean?
if log28 = log4 +logx what is the value of x
Water Cycle: As ___________ cools, it changes back to liquid form. Drops come together to form ________.
Water Cycle: As ___________ cools, it changes back to liquid form. Drops come together to form ________.
Why does a bike get heavier when it rusts???Very confussed, I cant find anything on the internet :( please help
Evaporation: Evaporation is the process where a _________ changes into a _________.
Why does a bike get heavier when it rusts???Very confussed, I cant find anything on the internet :( please help