迴セ蝨ィ蝨ー縺ィ蜑榊セ後�鬆�岼 *** (x+a)(x+b) ***/荵玲ウ輔�蜈ャ蠑�(x+a)(x+b)...1/荵玲ウ輔�蜈ャ蠑�(x+a)(x+b)...2/荵玲ウ輔�蜈ャ蠑�(x+a)(x+b)...3/荵玲ウ輔�蜈ャ蠑�(x+a)(x+b)...4/*** (a+b)2 ***/荵玲ウ輔�蜈ャ蠑�(a±b)2...1/荵玲ウ輔�蜈ャ蠑�(a±b)2...2/荵玲ウ輔�蜈ャ蠑�(a±b)2...3/荵玲ウ輔�蜈ャ蠑�(a±b)2...4/*** (a+b)(a-b) ***/荵玲ウ輔�蜈ャ蠑�(a+b)(a-b)...1/荵玲ウ輔�蜈ャ蠑�(a+b)(a-b)...2/荵玲ウ輔�蜈ャ蠑�(a+b)(a-b)...3/*** 縺�m縺�m縺ェ螻暮幕 ***/蛻�焚菫よ焚/蠑上�螻暮幕.邱丞粋(竏�)/ 次の式を展開しなさい.(正しい式をマウスで選びなさい.) (1) (x+6)(x−6)解説
=
|
(2) (x+9)(x−9)解説
=
|
(3) (x+5)(x−5)解説
=
|
(4) (a+8b)(a−8b)解説
=
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(5)
=
|
(6) 103×97解説
=
9981
9983
9985
9987
9989
9991 9993 9995 9997 9999 10001 10003 10005 10007 10009 10011 10013 10015 10017 10019 |
(7) 10.5×9.5解説
=
99.05
99.15
99.25
99.35
99.45 99.55 99.65 99.75 99.85 99.95 100.05 100.15 100.25 100.35 100.45 100.55 100.65 100.75 100.85 100.95 |
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