Mathematics
Senior High
この2つ、なぜ同じ解き方ができないんですか?
左のは右辺を±で考えるのに対して、
なぜ右の問題はその必要がないんでしょうか?
2
| 2 |
(9)
rf
っ
2
( caO
らぶ
シー
2とと9/
2(z のイ| (ろう)
3(z-11| の
(zz27
(xs2/
2 | -人| =ァ
2てに中 *
|
[|
1
しに化せ1
2 1
2
= flz-1- (はそり
ecりせ1 (<
ss2ドGxga/
(224を 3(ガ
りリィアァ(o
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