Mathematics
Senior High
なぜ⑤の式になるのかわかりません。途中式など詳しく教えてほしいです🙇🏻♂️
25
(i) p=1,g=1のとき,
[1=b-a,
(1=(
[1=(a-b)(a+b+1).
③ ④ に代入して,
a+b+1=-1.
③. ⑤ より.
(3
9
3
2'
a=- 6=-1
2°
(3)
4
5
Answers
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