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

Which decimal is equivalent to 13/20?
solve the proportion2x + 1/x + 1 = 14/3x-1
Which of the following can fix nitrogen? Answer  A.human industrial processes   B.lightning  C.certain bacterial species   D.all of the above
Write good insulators around the home
In how many ways can 12 one-dollar coins be shared between Josh, Frank, and Suzy if each of them receives at least 3 coins?
The areas of two circles are 36(pi) and 64(pi). What is hte ratio of the diameters? of the circumferences?
What is/was the American dream? I need at least 10 bullet points about what the American dream was please somebody help me
How many combinations of 3 students can a teacher choose from 32 students?   A. 96
If 3x – 10 = 17, what is the value of 6x + 20 ?
13/20-3/10 estimate: closer to 1 or 0?