kellyali22
kellyali22 kellyali22
  • 13-08-2020
  • Mathematics
contestada

y = 4x2 - 16 has how many real roots?
A. 0
B. cannot be determined
C.1
D.2

Respuesta :

wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 13-08-2020

Answer:

2 real roots

Step-by-step explanation:

y = 4x2 - 16

Set equal to zero

0 = 4x2 - 16

Add 16 to each side

16 = 4x^2

Divide by 4

16/4 = 4x^2/4

4 = x^2

Take the square root of each side

sqrt(4) = sqrt(x^2)

±2 =x

There are 2 real roots

Answer Link

Otras preguntas

In your own words, describe what it must have been like for a slave to watch the colonies become so successful in large part to the work of slaves.
Hofstede's uncertainty avoidance dimension can best be described as the extent to which people?
8. Draw a diagram of the fast carbon cycle and another diagram of the slow carbon cycle. (1 point)
Miente para mantener las apariencias. Es. Murió su mujer y vive solo. Es. No le gusta gastar su dinero. Es. Se siente mal y está triste. Está. No vive con su es
SOMEONE PLEASE HELP ME
Arnez company’s annual accounting period ends on december 31. The following information concerns the adjusting entries to be recorded as of that date. The offic
What is the dependent variable in an experiment
Find each exact value. Use a sum or difference identity. cos 240°
A 2nd degree polynomial function whose graph contains the point 0 9
Please help me on this! Please