aalyssapena03 aalyssapena03
  • 14-10-2021
  • Mathematics
contestada

PLEASE HELP! I am having trouble answering the last question.

PLEASE HELP I am having trouble answering the last question class=

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 15-10-2021

9514 1404 393

Answer:

  3rd box: -1 +14a +7h

Step-by-step explanation:

You will need to "simplify" the difference, then do the division by h.

  f(a +h) = (6 -(a +h) +7(a +h)^2) = 6 -a -h +7(a^2 +2ah +h^2)

  f(a +h) = 6 -a +7a^2 -h +14ah +7h^2

Then the difference is ...

  f(a +h) -f(a) = 6 -a +7a^2 -h +14ah +7h^2 -(6 -a -7a^2)

  f(a +h) -f(a) = -h +14ah +7h^2

Dividing this by h, we get ...

  (f(a +h) -f(a))/h = (-h +14ah +7h^2)/h = -1 +14a +7h

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