Canadianfox
Canadianfox Canadianfox
  • 03-08-2018
  • Mathematics
contestada

Hello! Can someone explain to me why choice "b" is the answer?

Hello Can someone explain to me why choice b is the answer class=

Respuesta :

konrad509
konrad509 konrad509
  • 03-08-2018

[tex] x^2-2m=\dfrac{k}{2}x\\
2x^2-4m=kx\\
2x^2-kx-4m=0\\\\
\Delta=(-k)^2-4\cdot2\cdot(-4m)=k^2+32m\\
\sqrt{\Delta}=\sqrt{k^2+32m}\\\\
x=\dfrac{-(-k)\pm \sqrt{k^2+32m}}{2\cdot2}=\dfrac{k\pm \sqrt{k^2+32m}}{4}=\dfrac{k}{4}\pm \dfrac{\sqrt{k^2+32m}}{4}

[/tex]

Answer Link

Otras preguntas

Is it True or false?
How many roots do the following equations have? -12x2 - 25x + 5 + x3 = 0 A. 4 B. 5 C. 3 D. 2
A triangle can have two right angles? True or False
Why was the outbreak of plague in Eyam, England, so unique? only one person contracted the plague everyone who contracted the plague died everyone who contracte
Angie has laid out a design for a garden consisting of two triangular areas as shown. The points are A (0,0), B (0,5), C(3,5), D(6,5), E(6,0). Name the type of
The starship enterprise returns from warp drive to ordinary space with a forward speed of 50 km/s. to the crew’s great sur- prise, a klingon ship is 100 km dire
how should you write the proportion 9:36 = 10:40 using words?
How did the resolution of the Korean War impact global politics, especially in the Pacific?
Which number line represents all of the values of x for the equation x2 = 16? A number line is shown from negative 10 to 0 to positive 10. There are increment
what are some of the blessings of liberty that you enjoy? how can you helpto make sure that future generaions will also emjoy them?