化簡
1.(7p-6q)+(2p+4q)
2.(6a-5b)-(7a-8b)
3.(2m2次方+mn)+(3n2次方+5mn)
4.(6b+4b2次方)+(8+5b)
要有過程
有數學唔識做？？
2007-08-17 6:42 am
回答 (3)
2007-08-17 6:51 am
✔ 最佳答案
1.(7p-6q)+(2p+4q)= 7p - 6q + 2p + 4q
= 9p - 2q
2.(6a-5b)-(7a-8b)
= 6a - 5b - 7a + 8b
= 3b - a
3.(2m2次方+mn)+(3n2次方+5mn)
= 2m^2 + mn + 3n^2 + 5mn
= 2m^2 + 3n^2 + 6mn
4.(6b+4b2次方)+(8+5b)
= 6b + 4b^2+ 8 + 5b
= 4b^2 + 11b + 8
OK 嗎?
參考: myself
2007-08-17 6:57 am
1. (7p-6q)+(2p+4q)
=7p-6q+2p+4q
=7p+2p-6q+4q
=9p-2q
2. (6a-5b)-(7a-8b)
=6a-5b-7a+8b
=6a-7a-5b+8b
=-a+3b
=3b-a
3. (2m2次方+mn)+(3n2次方+5mn)
=2m2次方+mn+3n2次方+5mn
=2m2次方+3n2次方+6mn
4. (6b+4b2次方)+(8+5b)
=6b+4b2次方+8+5b
=4b2次方+11b+8
=7p-6q+2p+4q
=7p+2p-6q+4q
=9p-2q
2. (6a-5b)-(7a-8b)
=6a-5b-7a+8b
=6a-7a-5b+8b
=-a+3b
=3b-a
3. (2m2次方+mn)+(3n2次方+5mn)
=2m2次方+mn+3n2次方+5mn
=2m2次方+3n2次方+6mn
4. (6b+4b2次方)+(8+5b)
=6b+4b2次方+8+5b
=4b2次方+11b+8
2007-08-17 6:53 am
1. (7p-6q)+(2p+4q)
=7p-6q+2p+4q
=9p-2q
2.(6a-5b)-(7a-8b)
=6a-5b-7a+8b
=-a+3b
3.(2m2次方+mn)+(3n2次方+5mn)
=2m2次方+mn+3n2次方+5mn
=2m2次方+3n2次方+6mn
4.(6b+4b2次方)+(8+5b)
=(6b+4b2次方)+(8+5b)
=6b+4b2次方+8+5b
=11b+4b2次方
希望幫到你
2007-08-16 22:55:48 補充：
留左 84.(6b 4b2次方) (8 5b)=(6b 4b2次方) (8 5b)=6b 4b2次方 8 5b=11b 4b2次方 8遲左幾分鐘 .
=7p-6q+2p+4q
=9p-2q
2.(6a-5b)-(7a-8b)
=6a-5b-7a+8b
=-a+3b
3.(2m2次方+mn)+(3n2次方+5mn)
=2m2次方+mn+3n2次方+5mn
=2m2次方+3n2次方+6mn
4.(6b+4b2次方)+(8+5b)
=(6b+4b2次方)+(8+5b)
=6b+4b2次方+8+5b
=11b+4b2次方
希望幫到你
2007-08-16 22:55:48 補充：
留左 84.(6b 4b2次方) (8 5b)=(6b 4b2次方) (8 5b)=6b 4b2次方 8 5b=11b 4b2次方 8遲左幾分鐘 .
參考: 自己
收錄日期: 2021-04-13 16:39:45
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https://hk.answers.yahoo.com/question/index?qid=20070816000051KK06289