Friday

July 25, 2014

July 25, 2014

Posted by **Sophie** on Wednesday, September 11, 2013 at 10:21pm.

2x(2x)^2: 2x(4x^2)?

Now do I multiply or add the big numbers?

also Im having trouble on these:

1. x^2(xy)^3: x2(x^3y^3)

2. 3x^2(2x)^3: 3x^2 (8x^3)

3. -2x^2y(3xy^2)^2

4. -(3x)^2: -(9x^2)?

5. 5x(2x^2)^2

6. -3x^2y(xy)^3

7. 2xy^2(3x^2y)^3

Everything is done but the last step, please help, thanks

- Please any math helper!! -
**Writeacher**, Wednesday, September 11, 2013 at 10:43pmIf no math tutor comes online who can help you, you should see if you can find explanations here:

http://www.khanacademy.org/

There is no need to connect with Facebook or anything. Just scroll down to the Math section (just under BROWSE OUR LIBRARY) and find the math level you're studying. Once you're in the right section, go through the videos in which different math concepts are taught.

Make sure you don't just sit around here waiting for someone to show up!!

- Please any math helper!! -
**Writeacher**, Wednesday, September 11, 2013 at 10:46pmHere are other websites that may have explanations to help:

http://www.aaamath.com/

http://mathforum.org/dr.math/

- Please any math helper!! -
**Steve**, Wednesday, September 11, 2013 at 11:55pmNot sure what it is you want to do. What is the "last step"? The "big numbers" are just coefficients, and can be moved around as needed, since multiplication is commutative.

x^2(xy)^3: x2(x^3y^3): x^5y^3

3x^2(2x)^3: 3x^2 (8x^3): 3x^2 * 8x^3: 24x^5

-2x^2y(3xy^2)^2: (-2)(x^2y)(9)(x^2y^4): -18x^4y^5

-(3x)^2: -(9x^2): (-1)(9x^2): (-1)(9)x^2: -9x^2

5x(2x^2)^2: (5)(x)(4x^4): 20x^5

-3x^2y(xy)^3: -3x^5y^4

2xy^2(3x^2y)^3: 54x^7y^5

One thing they didn't test was things like

(-3xy^2)^2: (-3)^2 x^2y^4: 9x^2y^4

having a "-" inside the parens can make a difference!

**Related Questions**

To: bobpursley or any math helper - please help me on my questions, I have a big...

Math ---Helper - Helper I really need ur help with some of my math questions ...

TO Helper - Helper could you please look through my other Algebra Math posts, I ...

Need help in math - Janet took a test that contained 328 questions. She answered...

math help - I need help solving this math problem, please: Problem: Angela's ...

Math - I need help solving this math problem, please: Problem: Angela's math ...

To Reiny, math helper - can you look at my post, its just 4 math terms I need to...

math 140 - I have two questions posted that has not been answered please help. ...

NVQ level 3 buisness admin - ok im really struggling on the questions on unit ...

MATH - Wendy answered 85% of the questions on her history test correctly. There ...