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

.Sam. Group TitleBest ResponseYou've already chosen the best response.0
Apply http://openstudy.com/users/.sam.#/updates/5181023ce4b0aaab28b79617
 one year ago

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

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

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

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

Shadowys Group TitleBest ResponseYou've already chosen the best response.1
u forgot to multiply the 14 by 4? the others are right
 one year ago

ladiesman217 Group TitleBest ResponseYou've already chosen the best response.0
so \[\frac{ 8\sqrt{6456} }{ 4 }\]
 one year ago

Shadowys Group TitleBest ResponseYou've already chosen the best response.1
yup! you've got it. :)
 one year ago

uri Group TitleBest ResponseYou've already chosen the best response.1
Its soo easy :D
 one year ago

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

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

ladiesman217 Group TitleBest ResponseYou've already chosen the best response.0
ok thnx
 one year ago

Shadowys Group TitleBest ResponseYou've already chosen the best response.1
you’re welcome :)
 one year ago
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