Mathematics
Senior High
(5)と(6)の解き方を教えてください<(_ _)>
. 2 次方程式 z2 2z十5ニニ0の2つの解を oc, とするとき, 次の式の値を求めなさい。
(1) o+ (2) eg
(3) o72 To | (④) wi大
(9)e-ゲ の
O
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