Mathematics
Senior High
Resolved
解き方が分かりません。
答えは(1)19 (2)は18です。
よろしくお願いします。
1
1
y=
V5-2
10
のとき,次の式の値を求めよ。
Xミ
5+2
x
(1) x+xy+ y
25
P.33
x
y
33
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