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

Which is NOT a line of symmetry?
Find X value.Will rate brainliest for the right ans​
The number of liters of water remaining in a tank t minutes after the tank has started to drain is R(t) = 2t^3 - 20t^2 -72t + 820. At what moment is the water d
1.) The population of two different cities, Milmo City and Ridge City, can each be modeled by linear equations. The equation Pm = (5/3)t + 2 defines the populat
help me with this plz​
Dtermine the Range and domain defined by R = {(x-1), (x+2); x € (2,3,4,5)}​
A boy starts the week with 3kg of rice, every day he cooks 0.6kg. How much rice will he have left after 4 days?
What method did traders use to travel on the Silk Road? Why?
Answer the question below
A wall is 4m high and 40 cm wide it contain two Windows of dimension 2.5 X 1 metre and gateway of dimension 2 metre multiply 3 if 24560 cubical bricks of length