化簡下列各題,help~40分!

2007-09-24 5:53 am
1)5(p-q)2
——---(分數線)
2p-2q

2)2(s+t)2
——----(分數線)
6s+6t
3)st-su
——----(分數線)
4(t-u)
4)5y+10z
——-----(分數線)
2y+4z


5)5x+5y
—— (分數線)
10x+10y

回答 (3)

2007-09-24 6:01 am
✔ 最佳答案
1.
= 5(p-q)^2 / 2(p-q)
= 5(p-q) / 2

2.
= 2(s+t)^2 / 6(s+t)
= (s+t) / 3

3.
= s(t-u) / 4(t-u)
= s / 4

4.
= 5 (y+2z) / 2 (y+2z)
= 5/2

5.
=5 (x+y) / 10 (x+y)
= 1/2
2007-09-24 6:09 am
1) 2.5(p-q)
2)(s+t)/3 ( / = to divide or over )
3)s/4
4)2.5
5)0.5
2007-09-24 6:02 am
1) 5(p-q)
---------
2
2)2(s+t)
-------------
6
=s+t
-------------
3

3)s/4

4)5(u+2z)
-----------------
2(y+2z)
=5/2

5) 5/10=1/5

2007-09-23 22:03:16 補充:
5)化簡後=1/2
參考: myself


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