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iwanttogotostanford
 one year ago
NEED HELP ASAP PLEASE:
Solve x^2 + 8x − 3 = 0 using the completingthesquare method.
x = four plus or minus the square root of three
x = negative four plus or minus the square root of three
x = four plus or minus the square root of nineteen
x = negative four plus or minus the square root of nineteen
iwanttogotostanford
 one year ago
NEED HELP ASAP PLEASE: Solve x^2 + 8x − 3 = 0 using the completingthesquare method. x = four plus or minus the square root of three x = negative four plus or minus the square root of three x = four plus or minus the square root of nineteen x = negative four plus or minus the square root of nineteen

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iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0@pooja195 @Nnesha

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1complete the square is: turn this \(\large ax^2 + bx + c = 0\) into this \(\large a(x+d)2 + e = 0\) remember: \(\Large d = \frac b{2a} \) \(\Large e = c  \frac{b^2}{4a}\)

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0so it would be C right???

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1your equation is: \(\large x^2 + 8x + (3) = 0\) so turn it into this: \(\large a(x+d)2 + e = 0\) by first solving: \(\Large d = \frac b{2a} =???\) \(\Large e = c  \frac{b^2}{4a} = ??? \)

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0ok, and i go C

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0it is really? i did it right?:D

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0could you help with one more? @Jack1

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1wait... neg 4 negative 4! dammit, sorrt D not C

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0aww ok:( thanks again! can i ask you one more

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0Using the completingthesquare method, find the vertex of the function f(x) = –2x^2 + 12x + 5 and indicate whether it is a minimum or a maximum and at what point. Maximum at (–3, 5) Minimum at (–3, 5) Maximum at (3, 23) Minimum at (3, 23)

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1ok, so have u completed the square?

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1and ur equation is now...?

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1no. what are a, b and c in ur original equation?

Jack1
 one year ago
Best ResponseYou've already chosen the best response.1no. \(\large ax^2 + bx + c = 0\) \(\large 2x^2 + 12x + 5 = 0\) so a is 2 b is 12 c is 5... right?

iwanttogotostanford
 one year ago
Best ResponseYou've already chosen the best response.0yes! sorry what now? @jack1
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