國中因式分解題目
回答 (2)
2012-11-12 3:09 am
✔ 最佳答案
x^2y^2－x^2－y^2－6xy+4＝(x^2y^2－4xy+4)－(x^2+2xy+y^2)
=(xy－2)^2－(x+y)^2
=(xy－x－y－2)(xy+x+y－2)
2012-11-12 3:15 am
x^2y^2-x^2-y^2-6xy+4
x^2y^2-x^2-y^2-2xy-4xy+4
x^2y^2-4xy+4-x^2-y^2-2xy
(x^2y^2-4xy+4)-(x^2+2xy+y^2)
(xy-2)^2 - (x+y)^2
(xy+x+y-2)(xy-x-y-2)
x^2y^2-x^2-y^2-2xy-4xy+4
x^2y^2-4xy+4-x^2-y^2-2xy
(x^2y^2-4xy+4)-(x^2+2xy+y^2)
(xy-2)^2 - (x+y)^2
(xy+x+y-2)(xy-x-y-2)
收錄日期: 2021-04-30 17:14:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121111000016KK06158