help~要交maths問題答案

1.p x 2q x 3p x q
=p x 3p x 2q x q
=3p^2 x 2q^2

2. 4r x r x 2s x r x s
=4r x r x r x 2s x s
=4r^3 x 2s^2

3.(2 x l - 3 x m)/(5 x n x n)
=(2-3m)(5n^2)
=10n^2-15mn^2

4. 2 x 2c + 3 x 2d/ (18 x b x b)
=4c+6d / 18b^2

2012-10-18 21:41:16 補充：
1. 再多一個step:
=3p^2 x 2q^2
=6p^2q^2

2012-10-18 21:41:53 補充：
2. =4r^3 x 2s^2
=8r^3s^2

1. p x 2q x 3p x q
=3p^2 x 2q^2

2. 4r x r x 2s x r x s
=4r^3 x 2s^2

3. (2l-3m)/(5n^2)
=(2l-3m)/5n^2

4. 2 x 2c+3 x 2d/(18b^2)
=(4c+6d)/18b^2
=(2c+3d)/9b^2

1.6 q square *3p square
2.i don t know
3.(2*1-3m)
--------------
5n square
4.4c+32d
----------
18b sqaure

2012-10-18 21:19:27 補充：
hope this can help you!^^