Mathematics
Senior High
Resolved
52番の問題がわかりません詳しく教えてください
x+y_y+z_
x+x
☐ 52
=
2z
==
のとき、この式の値を求めよ。
2x
2y
例題 x+y+z=a, a(yz+zx+xy)=xyz が成り立つとき
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