Mathematics
Senior High
Solved
一つ目の🟰から二つ目の🟰になるときの計算を詳しく教えてほしいです!!!
お願いします🙇🙇🙇
(2)
1
-
+
1
a²+a
a
1
+
a²+3a+2
1
1
1
+
+
a(a-1)
a(a+1) (a+1)(a+2)
= (a ²±² 1 − 1 ) + ( ²±² - 0 + 1 ) + ( a +1-0+2)
II
1
a-1
--
1 (a+2)-(a-1)
-
a+2
=
=
3
(a-1)(a+2) (a-1)(a+2)
Answers
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