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Quadratics!

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zara:
Find the value of k such tht the st. line y=2x+k meets the curve x2+2xy+2y2=5.

i started buh got stuck in between....

answer urgently anyone if possible!
thanks!

nid404:
what's the answer?

Ghost Of Highbury:
i'm getting this answer..

k<8.06

is that correct??

nid404:
post your steps plz

Ghost Of Highbury:
lemme try again...i
ll post soon

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