Mathematics
Senior High
Resolved
これって合ってますか??
解答と順番が違うんですけど、、、
順番は関係ありますか?
(6)(x+y+z)(x+y-z)
{(x+g)+2}{(x+)-2}
(x+1)-2
x² + 2 2 Y + y² - 2²
(6) x²+ y²-22+2xy
Answers
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ありがとございます。