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 salutation for a business letter is correct? A. Dear Mayor Cortez— B. Dear Mayor Cortez: C. Dear Mayor Cortez, D. Dear Mayor Cortez
An object of mass 2.00 kg is held at a position A, a vertical height of 20.0 m above the ground. Point B is 8.00 m directly below A. Neglect air resistance and
who coined the term "jazz age"?
What happens if your fingers twitch by itself/themself?
How is a radio wave different from a gamma wave? Is it Wavelength? Or is it Frequency? Please explain this to me...
which measurement in more precise 54.1 cm or 54.16 cm
Why are common names not a good reference to a species? common names can be in different languages common names vary with location common names vary with cultur
What is the value of w? 5(9 − 3) = w • 9 – 5 • 3
Which of the following chemical reactions is an oxidation-reduction reaction? CuSO4 + BaCl2 yields BaSO4 + CuCl2 Pb(NO3)2 + 2NaCl yields PbCl2 + 2NaNO3 N2 + 3H2
what significant event occurred in 1054 in rome?