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これの答えがcなんですけど解き方教えてくださいm(_ _)m

3 R 5 (√5-1) x²+6x+2+2√5=0 (a) x = √5±1 = (c) x = (√5+ 1). (√5+1) - - -

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2次方程式の解の公式x=(-b±√(b^2-4ac))/2aです。

星華

ありがとうございます!!
解くことが出来ました😊

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