gracezhong10 gracezhong10
  • 14-12-2019
  • Mathematics
contestada

Can the equation have a positive root: (x+5)(x+6)+9=0

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 15-12-2019

Answer:

  no

Step-by-step explanation:

In expanded form, the equation is ...

  x^2 +11x +39 = 0

The discriminant is ...

  11^2 -4(1)(39) = -35

It is negative, so there are only complex roots.

_____

Descartes' rule of signs tells you there are zero positive real roots, because there are zero sign changes in the coefficients.

Answer Link

Otras preguntas

Que tienen en común las obras arquitectónicas más bellas del mundo???????
What is the difference between velocity and acceleration? A. Velocity describes an object's position and acceleration describes how fast it moves. B. Velocity i
explain in your own words how the aunt's invitation to come to South Africa motivated the author.
Help needed! Combine the like terms to make a simpler expression: 8t + 1 + (-4t) + (-6)
Libby and Stevie are baking Easter cookies to take to school. They want to make 9 dozen cookies and they need 2/3 of a cup of sugar for each dozen. How much su
laurel went swimming 7 times in 3 weeks. one time she swam for 1 1/2 hours. The other 6 times she swam for 30 minutes each time. How many hours did Laurel swim
1 fourth B minus 10 equals 7
The economy of these early civilizations was based on _____. a. Warfare b. Agriculture c. Industry d. Production
Can you tell me a persons name But it needs to start with bl- In Spanish
what four pieces of information is included in a provider's credentials