Mathematics
Junior High
Solved
なんで()つけなきゃいけないんですか?
いろいろな式の計算
例5
2(x-3)(x-2) (x-4)
=2(x²-6x+9)-(x²-6x+8)
=2x2-12x+18-x2+6x-8
( )をつけ忘れない
ようにしよう!
=x2-6x+10
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