thesmileyface28 thesmileyface28
  • 04-03-2018
  • Mathematics
contestada

For which k will the graph of f(x)=x^2−kx+k^2 cross the x-axis twice?

Respuesta :

tynollette tynollette
  • 04-03-2018
for the graph to cross the x axis twice, b²-4ac needs to be larger than 0
b=-k, a=1, c=k²
b²-4ac=k²-4k²=-3k²
-3k² will never be larger than 0. 
Answer Link
dvclee2
dvclee2 dvclee2
  • 20-04-2020

Answer:

K has no solutions.

Step-by-step explanation:

Because the parabola opens upwards and the y-intercept is non-negative, the parabola cannot cross the x-axis twice. Duh.

Answer Link

Otras preguntas

What is the volume of this sphere? Use ​ ≈ 3.14 and round your answer to the nearest hundredth.
What were improvements for workers did trade unions demand?
help with question b
Use the exchange rate £1 = €1.15 to convert €23 into £.
Europeans used "Forwardness" as their central justification for conquest. True False
Complete the following table with the appropriate Spanish reflexive pronouns.
3x/8=15......will give brainliest
Sarah bought a shirt for $24.00, before tax. After 6% sales tax is added on to the cost of the shirt what is Sarah’s total cost
Our constitution does not copy the laws of neighbouring states; we are rather a pattern to others than imitators ourselves. Its administration favours the many
Find the greatest common factor of the following monomials: 25x5 20x6