matokiwasssup
matokiwasssup matokiwasssup
  • 03-02-2018
  • Mathematics
contestada

In the equation f(x) = x²+2x+3, there are 2 root.
true or false?

Respuesta :

Аноним Аноним
  • 03-02-2018
this is a equation:
ax²+bx+c=0

If you want the number of roots in any equation:
you only have to do this operation.
b²-4ac

if b²-4ac>0 you have two roots.
if b²-4ac=0 you have one root
if b²-4a<0  you don´t have any real root.


in this case:
x²+2x+3=0
b²-4ac=2²-4(1)(3)=4-12=-8<0  ; then you don´t have any real root.

answer. false
 
Answer Link

Otras preguntas

Fertile soil is important for plant growth. Which is a characteristic of fertile soil?
PLEASE HELPP thanks (if you do):))
A full bag of dog food weighs 5 1/2 pounds. How much dog food do you have if there are 3 3/4 bags in the cupboard
which is the equation of a hyperbola centered at the origin with focus ( 0,4) and vertex (0,sqaure root 12)
Fill in the blank in the following sentence with the appropriate verb below. Si J'____ le temps, je partiral quelques jours en vacances A. serai B. aurai C. ai
Enter the phrase as an algebraic expression
sssssssssssssssssssssssssssssssssssssssssssssssssssss
Help me english fast
Que hay en la casa worksheet
WILL GIVE BRAINLIST!!! What positive gains did African Americans in Texas achieve in the 1930s?