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ｐｏｌｙｎｏｍｉａｌ　ｑｕｅｓ

[font=新細明體]ｆｉｎｄ：１．[/font]x^3-11x^2 +31x-21  ÷ x-7

[font=新細明體]２．[/font]6x^3+ x^2- 17x +6 ÷ 2x -3

[font=新細明體]３[/font].2x^4-x^3+ 4x^2- 2x+ 3 ÷  x^2 - x + 1

[font=新細明體]麻煩你們盡量在今晚回答喔∼∼ｔｈｚ[/font]