please help me to factorize
1)18xy-3y
2)5t^3-15t^3+20t
3)24x^2y^2+36x
4)-7m^2n+35mn^2
F.2 FACTORIZATION (URGENT)!!
2009-10-27 6:58 am
回答 (3)
2009-11-01 8:56 pm
✔ 最佳答案
1)18xy-3y=6y(18x-3)
2)5t^3-15t^3+20t
=15t-45t+20t
=5t(3-9+4)
3)96xy+36x
=12x(8y+3x)
4)-7m^2n+70mn
=-14mn+70mn
=14(-mn+5mn)
=14(5mn-mn)
=14mn(5)
2009-11-01 12:58:29 補充：
Sorry
1)18xy-3y
=3y(6x-1)
4)
=14mn(5-1)
參考: me, me
2009-10-30 3:22 am
1.18xy-3y
=3y(6x-1)
2.5t^3-15t^3+20t
=5t(t^2-3t^2+4)
3.24x^2y^2+36x
=12x(2xy^2+3)
4.-7m^2n+35mn^2
=-7mn(m-5n)
2009-11-07 17:32:45 補充：
bounty121803計錯數
=3y(6x-1)
2.5t^3-15t^3+20t
=5t(t^2-3t^2+4)
3.24x^2y^2+36x
=12x(2xy^2+3)
4.-7m^2n+35mn^2
=-7mn(m-5n)
2009-11-07 17:32:45 補充：
bounty121803計錯數
2009-10-27 7:41 am
1)18xy - 3y
= 3y(6x - 1)
2)5t^3-15t^2+20t
= -10t^3 + 20t
= 10t(2 - t^2)
3)24x^2y^2+36x
= 12x(2xy^2 + 3)
4)-7m^2n+35mn^2
= 7mn(-m + 5n)
= 7mn(5n - m)
= 3y(6x - 1)
2)5t^3-15t^2+20t
= -10t^3 + 20t
= 10t(2 - t^2)
3)24x^2y^2+36x
= 12x(2xy^2 + 3)
4)-7m^2n+35mn^2
= 7mn(-m + 5n)
= 7mn(5n - m)
收錄日期: 2021-04-23 23:19:20
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https://hk.answers.yahoo.com/question/index?qid=20091026000051KK02329