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anonymous
 one year ago
Solve this quadratic equation using the quadratic formula.
x2 + 8x  5 = 0
anonymous
 one year ago
Solve this quadratic equation using the quadratic formula. x2 + 8x  5 = 0

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pooja195
 one year ago
Best ResponseYou've already chosen the best response.0List your A,B,C values keeping this in mind \[\huge~\rm~ax^2+bx+c=0\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{ 8\pm \sqrt{(8)^{2}4(1)(5)} }{ 2(1) }\]

jigglypuff314
 one year ago
Best ResponseYou've already chosen the best response.0don't forget about the minus sign (negative) in front of that 5 :)

GreenCat
 one year ago
Best ResponseYou've already chosen the best response.1Perfect @gizmo25 Now simplify. \[\frac{ 8 \pm \sqrt{6420} }{ 2 }\]\[\frac{ 8 \pm \sqrt{44} }{ 2 }\]Oops; I was about to solve it all for you. Can you work it out from here? Hint: Pull out what you can from the square root.

jigglypuff314
 one year ago
Best ResponseYou've already chosen the best response.0@GreenCat note that I just mentioned the negative so it should be a 64 + 20 instead :)

GreenCat
 one year ago
Best ResponseYou've already chosen the best response.1oh yes; it is (5). Sorry.

GreenCat
 one year ago
Best ResponseYou've already chosen the best response.1I was working from Gizmo's equation. @gizmo25 Remember to include the negative in "5" there.

GreenCat
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{ 8 \pm \sqrt{64+20} }{ 2 }\]\[\frac{ 8 \pm \sqrt{84} }{ 2 }\]Here You go.
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