Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
Recommended
【数学】覚えておいて損はない!?差がつく裏ワザ
11419
87
【夏勉】数学中3受験生用
7354
105
【テ対】苦手克服!!証明のやり方♡
7060
61
【夏まとめ】数学 要点まとめ!(中1-中3途中まで)
6375
81
御免、訂正です
(1)◎
(2)✖-4ab→-24ab
(3)✖10ab→-10ab
(4)◎
(5)◎
(6)✖+21ab→-21ab
(7)◎
(8)◎
(9)◎
(10)◎