因式分解下列各題:
1) 4m(a-2c)+7n(2c-a)
2) rs-rt+ws-wt
3) pm+mn-4p-4n
4) su-sv-3tu+3tv
中2 maths 題(急)10分
2007-09-27 4:29 am
回答 (2)
2007-09-27 4:34 am
✔ 最佳答案
1) 4m(a-2c)+7n(2c-a)=4m(a-2c)-7n(a-2c)
=(a-2c)(4m-7n)
2) rs-rt+ws-wt
=r(s-t)+w(s-t)
=(s-t)(r+w)
3) pm+mn-4p-4n
=m(p+n)-4(p+n)
=(p+n)(m-4)
4) su-sv-3tu+3tv
=s(u-v)-3t(u-v)
=(u-v)(s-3t)
2007-09-27 4:45 am
中2 maths 題(急)10分
1) 4m(a-2c)+7n(2c-a)
=4m(a-2c)-7n(a-2c)
=(a-2c)(4m-7n)
2) rs-rt+ws-wt
=r(s-t)+w(s-t)
=(s-t)(r+w)
3) pm+mn-4p-4n
=pm+mn-(4p+4n)
=m(p+n)-4(p+n)
=(p+n)(m-4)
4) su-sv-3tu+3tv
=su-sv-(3tu-3tv)
=s(u-v)-3t(u-v)
=(u-v)(s-3t)
1) 4m(a-2c)+7n(2c-a)
=4m(a-2c)-7n(a-2c)
=(a-2c)(4m-7n)
2) rs-rt+ws-wt
=r(s-t)+w(s-t)
=(s-t)(r+w)
3) pm+mn-4p-4n
=pm+mn-(4p+4n)
=m(p+n)-4(p+n)
=(p+n)(m-4)
4) su-sv-3tu+3tv
=su-sv-(3tu-3tv)
=s(u-v)-3t(u-v)
=(u-v)(s-3t)
收錄日期: 2021-05-03 06:58:40
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https://hk.answers.yahoo.com/question/index?qid=20070926000051KK05016