Answers
(1)
a＾2-b＾2-c＾2+2bc
=a＾2-(b＾2-2bc+c＾2) …()の２乗作る
=a＾2-(b-c)＾2 …２乗－２乗
=(a+b-c)(a－b+c)
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(1)
a＾2-b＾2-c＾2+2bc
=a＾2-(b＾2-2bc+c＾2) …()の２乗作る
=a＾2-(b-c)＾2 …２乗－２乗
=(a+b-c)(a－b+c)
Users viewing this question
are also looking at these questions 😉
