Mathematics
Junior High
Resolved
共通因数でくくる所までは分かるのですが
その先の意味が分かりません。
2ab + 2b -a-1 を因数分解しなさい。
(4ftotかー4
2al28-1)+20-1 = (a+1)(26-1)
んし4-64-
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ありがとうございます!!