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

A teacher is selecting students to be team captains for a class game. Each student in the class has their name on a Popsicle stick. The teacher selects three Po
what are the names ochako's parents names​
Izopropanole doesn't form by Select one: a. Reduction of propan-2-one b. Hydration of 2-chloropropane c. Hydration of propene d. Reduction of propanal​
Which items are discounted? —- Ignore selected.
PLS HELP Find an equation of the line with a y-intercept of -3 and an x-intercept of -4.5
please help someone..
what short of event can inspire people​
Determine the approximate length of AC (please provide a good explanation, I want to understand this better!) A: 7 Units B: 7.07 Units C: 5 Units D: 1 Unit
At what point on the curve x = 6t2 + 6, y = t3 − 2 does the tangent line have slope 1 /2 ?
Rewrite the following using correct capitalization rules. 1. capt. william k. brown 3021 church rd. hastings, fl 32045 2. nassau high school graduation exercise