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Topic (Blue Devil) 7

The original poster: Broken jade─━═Blue tears ζ Views: 192 Replies: 3 Posted in: 2014-02-14 18:06:39
Broken jade─━═Blue tears ζ
Mathematics question


2x*2+3x+20=0 What is X1+X2 equal to?


Prompt: X1+X2=-b/a


Who else knows?
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Replies (3)

positive sequence reverse order
The lost generation of scholars℡ 2floor
Break zero.
2014-02-14 18:06:56
Broken jade─━═Blue tears ζ 3floor
Nobody knows?
2014-02-14 18:16:04
Jade Shattered @ Tian Chi 4floor
2x² + 3x + 20 = 0 Since Δ = b² - 4ac = 9 - 160 = -151 < 0, this problem has no solution, so the original poster doesn't need to use Vieta's formulas to impress people.
2014-02-14 20:13:38
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