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anonymous
 one year ago
Using the completingthesquare method, find the vertex of the function f(x) = –2x2 + 12x + 5 and indicate whether it is a minimum or a maximum and at what point.
anonymous
 one year ago
Using the completingthesquare method, find the vertex of the function f(x) = –2x2 + 12x + 5 and indicate whether it is a minimum or a maximum and at what point.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it is a maximum because the leading coefficientdw:1434844163162:dw is negative so the parabola opens down

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434843957618:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[ f(x) = –2x^2 + 12x + 5 \]to find the vertex, the first coordinate of the vertex is always \[\frac{b}{2a}\] which in your case is \[\frac{12}{2\times (2)}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0the second coordinate of the vertex is what you get when you replace \(x\) by the first coordinate

dmndlife24
 one year ago
Best ResponseYou've already chosen the best response.0Graph opens downward so it would be a maximum point Vertex formuladw:1434844392512:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah that is the first coordinate the second coordinate if \(f(3)\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0have a beer you are done

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0well completing the square \[f(x) = (2x^2 + 12x) + 5\] factor out 2 \[f(x) = 2(x^2  6x) + 5\] now complete the square in x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So is it maximum or minimum??

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0, find the vertex of the function \[(3,23)\] it is a max have a nice day

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Solve x2 + 12x + 6 = 0 using the completingthesquare method.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks friend. I also need help with that one

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434844578090:dw

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0so inside the brackets you need to add (6/2)^2 so the function is \[f(x) = 2(x^2  6x + 9) + 5 18\] which becomes f(x) = 2(x 3)^2  13 now you have completed the square have the equation in vertex form and can answer the question using the required method

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434844393236:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x^2 + 12x + 6 = 0 \\ x^2+12x=6\] is a start

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hahahah you're funny @satellite73 !!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434844713212:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok answer the other question please because I'm confused

campbell_st
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434844498447:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x^2+12x=6\]takes two steps to complete the square what is half of 12?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0right, and what is \(6^2\_?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oops what is \(6^2\)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so go right from \[x^2+12x=6\] to \[(x+6)^2=6+36\] or \[(x+6)^2=30\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then take the square root of both sides, don't forget the \(\pm\) and get \[x+6=\pm\sqrt{30}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0subtract 6 and you are done

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so is it 6 plus or negative radical 30?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0SUBTRACT 6 to solve for \(x\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434844993983:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434845032667:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1434845026665:dw
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