Mathematics
Senior High
２の（2）の答え教えてください！
(1) 2abx2 [x]
(2)-6xyz [yとz] (3) -abc [a とc]
2 次の式について降べきの順に整理せよ。
(1) x²-2x-3x+5
(2)3xy-x2+y2-2x-y+6
50
3 A=5x-2x2+3x+4. B=3x²-5x2+3 であるとき,次の計算をせよ。
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