Mathematics
Senior High
Resolved
問80の(2)の下から、2番目のイコールの計算の仕方が分かりません。教えてくれると助かります🙇♀️
--√7)
(2)
8
3+√5
=
8(3-√5)
(3+√5)(3-√5)
8(3-√5
32-(√5)
8(3-√5)
4
=2(3-√5)
= 2(3-2.236)
= 1.528
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ありがとうございます！参考になりました！！