Mathematics
Senior High
解き方がわかりません。
解説お願いします！
☑
329 22=3のとき, 2*+2の値を求めよ。
(2*+2-*)2=(2-2-*)2 +4・2*2-x
=32+4・1=13
2+2">0であるから 2*+2*=√13
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