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ladiesman217
 2 years ago
i give medals and fans
ladiesman217
 2 years ago
i give medals and fans

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ladiesman217
 2 years ago
Best ResponseYou've already chosen the best response.0solve \[2x ^{2}8x=7\]

.Sam.
 2 years ago
Best ResponseYou've already chosen the best response.0Apply http://openstudy.com/users/.sam.#/updates/5181023ce4b0aaab28b79617

Shadowys
 2 years ago
Best ResponseYou've already chosen the best response.1add 7 to both sides. \(2x^2  8x +7=0\) then apply the general formula.

ladiesman217
 2 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ (8)\sqrt{8x ^{2}2x*7} }{ 2*2 }\]

Shadowys
 2 years ago
Best ResponseYou've already chosen the best response.1it's \(x=\frac{(8)\pm \sqrt{(8)^24(2)(7)}}{2(2)}\) though

ladiesman217
 2 years ago
Best ResponseYou've already chosen the best response.0ok so simplify all that its \[\frac{ 8\sqrt{6414} }{ 4 }\]

Shadowys
 2 years ago
Best ResponseYou've already chosen the best response.1u forgot to multiply the 14 by 4? the others are right

ladiesman217
 2 years ago
Best ResponseYou've already chosen the best response.0so \[\frac{ 8\sqrt{6456} }{ 4 }\]

Shadowys
 2 years ago
Best ResponseYou've already chosen the best response.1yup! you've got it. :)

ladiesman217
 2 years ago
Best ResponseYou've already chosen the best response.0so simplify that its \[\frac{ 2\sqrt{2} }{ 2 }\]

Shadowys
 2 years ago
Best ResponseYou've already chosen the best response.1wait. you've missed the plus minus out. \(\frac{8 \pm \sqrt{8}}{4}\)=\(\frac{8 \pm 2\sqrt{2}}{4}=\frac{4 \pm \sqrt{2}}{2}\)
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