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zarkam21:
?
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satellite73:
yikes
satellite73:
you can plug in all those numbers i guess and see which ones give zeros, maybe best to cheat
satellite73:
look under "roots" it tells you the zeros http://www.wolframalpha.com/input/?i=2x%5E4-x%5E3-42x%5E2%2B16x%2B160
zarkam21:
Oh D!
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zarkam21:
Yay thank you
satellite73:
i don't see choices but maybe D it is 2 in any case
satellite73:
oh yeah, D yw
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