Mathematics
Junior High
Solved
此処の分野苦手なんです、、、
3 次の式を, くふうして計算せよ。
(1)
94×99
(x-4)(x+1620
(2)×27²-1×13²
4
(x²-x-2)
(3) 107²-2×105×107+105²
-A
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とてもわかりやすかったです！！