Mathematics
Junior High
Solved
x^2+y^2 +1 +2xy+2y +2x の模範解答は
x^2+ 2(y+1)x +y^2 +2y+1だったのですが、
2(y+1)x の部分は 2x(y+1)でも正解になりますか?
教えてください!!
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