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

Which best defines common law? law based on the wishes of legislators law based on precedent law based on a priest’s rulings law based on a judge’s feelings
which country consumes the most turkey in the world?
x + y = 3 2x + 2y = 6
Which statement best describes how Hebrew beliefs developed? Question 3 options: A:Hebrew beliefs were a reflection of what the Hebrews learned from the Egyptia
Aztecs were known for being kind, and their conquered neighbors loved them true are Fales
How does food from entering the trachea.
Sarah fenced in her backyard. The perimeter of the yard is 18 feet, and the width of the yard is 4 feet. Use the perimeter formula to find the length of the rec
What element does 'O' represent on the periodic table?
ANSWER ALL PLZ :) This is for a test.
A student performs a titration of 51.0 mL of a phosphoric acid (H PO) solution of unknown concentration with a standardized 1.25 M NaOH solution. The titration