(1) (atb)(C-d)
= acrad tbC -bd.
(3)(2244)(2-7)
2-14 42
- 22-10ス-28
- -2ス134-6
-を)()
(4)(5a+3b)(4a6)
- 2002-5a6 +12a6-38
- 2000f 7ab-36
46)2-34)(24-3)
e+a4-32-37-34244
こスー32g-3オー3様
2-2ス4-32-34
(6)15スき-2)(2xー4
こ 10K+224-4A-2014 -481S4
三10R4274-2014 -4 -44248
210K-1814 -4スー40184