anisagreen10 anisagreen10
  • 18-12-2018
  • Mathematics
contestada

How many no real complex roots does the polynomial f (x) = x^4 - x^2- 12 have?

A. 0
B. 1
C. 2
D. 3
E. 4

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 18-12-2018

Answer:

  • 2 real roots
  • 2 complex roots

Step-by-step explanation:

f(x) factors as ...

... f(x) = (x² -4)(x² +3) = (x -2)(x +2)(x² +3)

The real roots are x = ±2.

The complex roots are x = ±i√3.

___

We don't know what "no real complex roots" means. We suspect your answer may be C. 2.

Answer Link

Otras preguntas

HELPPP ITS TIMED Which statement is true about the functions? FIRST GRAPH IS EXPONTENTIAL SECOND GRAPH IS LINEAR A The exponential function is generally grow
Anna and Ken go to their bank for a home equity line of credit. What collateral can they use to obtain a secured loan? They can use their ________ as collateral
When using equity financing, firms run the risk of?
Changing the​ ________________ of a paragraph to a question can help a writer decide which details to include in the paragraph.
Types of calcareous marine microorganisms
Boating accidents involving sportsmen are usually a result of what?
Please help with this!!!!!
research suggests that the probability of a certain fuse malfunctioning increases exponentially as the concentration of an impurity in the fuse increases. the p
Bones are covered and lined by a protective tissue called periosteum. the inner (osteogenic) layer consists primarily of ________.
Blue light waves have more energy than red light waves. Which of these situations most likely produces a photoelectric effect? You may assume that the same meta