Kristank258
Kristank258 Kristank258
  • 02-06-2021
  • Mathematics
contestada

If the function f (2) 3x2 + bx + 2 has no real roots, which of the following could be the value of b? -7, -1, 8, 0
10​

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 02-06-2021

Answer:

b could be -1 or 0

Step-by-step explanation:

f(x) = 3x^2 +bx+2

if it has no real roots, the discriminant must be less than zero

b^2 -4ac <0

a=3  b=b  c=2

b^2 - 4(3)(2) <0

b^2 - 24 <0

b^2 < 24

Taking the square root of each side

b< 2 sqrt(6)  and b > 2 sqrt(6)

b could be -1 or 0

Answer Link

Otras preguntas

CAN MINERALS BE FORMED FROM DRIPPING WATER?
What are the sins committed by Don Pedro and Don Diego against Don Juan? ​
These photos will be resolve. Thanks. Sorry for my english.
What is the x-value of the solution to this system of equations? Y=2/7x-1 2x + 7y = -49
Read the passage below and answer the question that follows. Lillie was hiking in New Mexico when she noticed something on the ground. It was a stone point abou
Checkpoint Quiz 1 1. Write a formula for finding the area of a parallelogram. le
Who takes on the financial risk in starting a new business in a market economy A economists B combination of government planners and economists C entrepreneur
Can someone that reads the Mysterious Benedict Society help me?
which represents the solution to the inequality -3x +5 > 14?
What are the external elements that bring change in Earth's surface​