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

Why students can’t achieve success without a plan
how to solve 78.04÷8=
Summary on Bulgarias abandoned children
The formula for the ______ value interest factor of an annuity is {1-[1/(1+r)t]r}1-[1/(1+r)t]r.a. presentb. futurec. compoundd. discount
Sarina has thrown cubical dice 2 times. write the probability of getting 5 in first throw and 4 in second throw.​
How does 1/cos^2x = sec^2x?
What is 2/9÷5/18 expressed as a fraction in its lowest terms?
“Una gota de sangre” Ángela Hernández Núñez análisis literario
Find 13% of $1200 1. First tell me what you are you are going to do, IN WORDS​
Two ploughmen can plough a filed in 10 days. Find the out how long it would take 5 ploughmen to plough the same filed working at the same rate.