josnarycastillo josnarycastillo
  • 02-06-2022
  • Mathematics
contestada

30 Use the method of completing the square to determine the vertex of f(x) = x² - 14x - 15.
State the coordinates of the vertex.

Respuesta :

profarouk profarouk
  • 02-06-2022

Answer:

x² - 14x - 15 =  (x − 7)² − 64

Then the coordinates of the vertex are (7 , -64)

Step-by-step explanation:

x² - 14x - 15 = x² - 14x + (49 - 49) - 15

                  = (x² - 14x + 49) - 49 - 15

                  =  (x² - 14x + 7²) - 49 - 15

                  =  (x − 7)² − (49 + 15)

                  =  (x − 7)² − 64

x² - 14x - 15 =  (x − 7)² − 64

Then the coordinates of the vertex are (7 , -64)

Answer Link

Otras preguntas

you spend $40 on 5 pounds of concrete what is the unit rate in dollars per pound?​
I need help with this question
Question 2 1 pts Asplaner has three sections colored green, purple, and pink. If the spinner is spun three times, how many possible outcomes are there!​
Find all the zeros and multiplicities. Provide explanation. r(x)=x^2(x+5)(x-7)^3
When air particles are close together what is it called
This cartoon was published in 1920. What had just happened that would affect the young girl's future?
Which statement is FALSE? There is evidence that the Bertillon System was used in ancient Egypt, India, and China. The Bertillon System was used in the United
can you give me an example about radiation
Take schlatts love uwu (i cant spell)
How have you seen the impact of inflation on the things you buy? At least 5 sentence pls