多項數 ((20分*))

1. 2 + v + 9 + 3v
= 4v + 11

2. -3x - 1 + 4 + 9x
= 6x + 3

3. 3r + 11 -5r - 9
= -2r + 2

4. 4w^2 + 3w + 5w^2 - w
= 9w^2 + 7w

5. 11m + 4m^2 - m - 9m^2
= -5m^2 + 10m

6. 9g^2 + g - 8g + 10g^2
= 19g^2 - 7g


2007-10-11 19:49:14 補充：
第四條錯左, 補返比你, sorry4. 4w^2 + 3w + 5w^2 - w = 9w^2 + 2w 做得好辛苦, 請多多支 持, 投我一票, 唔該

1.11+4v
2.6x+3
3.-2r-2
4.9w^2+2w
5.10m-5m^2
6.19g^2-7g

1. 2 + v + 9 + 3v =3v+11
2. -3x - 1 + 4 + 9x =6x+3
3. 3r + 11 -5r - 9 =-2r+2
4. 4w^2 + 3w + 5w^2 - w =w(9w+3)
5. 11m + 4m^2 -m - 9m^2 =m(10-5m)
6. 9g^2 + g - 8g + 10g^2 =g(19g-7)

1. 2+ v +9+3v
=2+9+ v +3v
=11+4v

2. -3x-1+4+9x
=-3x+9x-1+4
=6x+3

3. 3r+11-5r-9
=3r-5r+11-9
=(-2r) +2

4. 4w^2 +3w +5w^2 -w
=4w^2 + 5w^2 +3w -w
=9w^2 +2w

5. 11m +4m^2 -m -9m^2
=11m-m +4m^2 -9m^2
=10m - 5m^2

6. 9g^2 +g -8g+10g^2
=9g^2 +10g^2 +g -8g
=19g^2 -7g

1.11+4v
2.6x+3
3.-2r+2
4.9w^2+2w
5.10m-5m^2
6.19g^2-7g

1.4v+11
2.6x-3
3.-2r+2
4.9w^2+2w
5.-5m^2+10m
6.19g^2-7g

1. 2 + v + 9 + 3v = 4v + 11
2. -3x - 1 + 4 + 9x = 6x + 3
3. 3r + 11 -5r - 9 = -2r + 2
4. 4w^2 + 3w + 5w^2 - w = 9w^2 +2w
5. 11m + 4m^2 -m - 9m^2 =-5m^2 + 10m
6. 9g^2 + g - 8g + 10g^2 = 19g^2 - 7 g