MariH MariH
  • 03-05-2014
  • Mathematics
contestada

solve for x: 2x^2+4x-16+=0

Respuesta :

marmal
marmal marmal
  • 03-05-2014
[tex]2x^2+4x-16=0|:2\\ x^2+2x-8=0\\ \Delta=36\Rightarrow\sqrt{\Delta}=6\\ x_1=\frac{-b+\sqrt{\Delta}}{2a}\ \vee\ x_=\frac{-b-\sqrt{\Delta}}{2a}\\ x_1=2\ \vee\ x_2=-4[/tex]
Answer Link
kate200468
kate200468 kate200468
  • 03-05-2014
[tex]2x^2+4x-16=0\ /:2\\ \\x^2+2x-8=0\\ \\x^2-2x+4x-8=0\\ \\x(x-2)+4(x-2)=0\\ \\(x-2)(x+4)=0\ \ \ \Leftrightarrow\ \ \ x-2=0\ \ \ \vee\ \ \ x+4=0\\ \\.\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=2\ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-4[/tex]
Answer Link

Otras preguntas

The circulatory system, the nervous system and the digestive system are all examples of what?​
help me with this one too?kinda urgent.​
What is velocity? A. Wavelength x frequency B.Wavelength + frequency C.Wavelength - frequency
A case of garlic cost $26 per 30 pounds how much does the garlic cost per ounce?
C++ ATM PROGRAM DESIGN Ask the user to enter the desired withdrawal amount in multiple of 10 dollars. The algorithm should determine the least number of bills
What is the equation of the line in point slope form with slope 3/4 and passes through the point (5, 8)?
2 1/4 x 3 1/5 in its simplest form
PLEASE HELP when do u get the infection for listeria? (if u search it up please give me a very short answer)
summarize the agriculture and culture of the Banpo civilization.
is -4 grader than -5