Mathematics
Junior High
Resolved

(1)の②が分かりません!
答えは、4√3です!

Answers

✨ Best Answer ✨

x=√3+√5,y=√3-√5 より
x+y=√3+√5+√3-√5=2√3
xy=(√3+√5)(√3-√5)=-2

②x²y+xy²
 =xy(x+y)
 =-2✕2√3
 =-4√3

もちろんx+y,xyの値は先に出しても大丈夫です👌
ファイトです📣

れもん🍋

ありがとうございます!!

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