Posted by **Nicole-Marie** on Saturday, September 15, 2007 at 11:48pm.

We had a substitute in math on friday and we got a worksheet, but he didn't explain how to do it very well. Could someone work out a problem for me?

1. (2b^3)^3 * 3(b^-4)^2 =

I have no clue how to do this. The answer key says it is 24b^2 but I can't get that

- Beginning Alegbra -
**Nicole-Marie**, Saturday, September 15, 2007 at 11:50pm
Oh wait, the answer is just 24b. I wrote the wrong answer. But I can't get that either.

- Beginning Alegbra -
**mathstudent**, Sunday, September 16, 2007 at 12:01am
(2b^3)^3 * 3(b^-4)^2

step #1) = 8b^9 * 3b^-8

step #2) = 24b

Explanation:

step 1: (2^3 is 8, b^3^3 = b^9, b^-4^2 = b^-8)

step 2: Multiply the coefficients (8*3=24). Muliply the b terms: b^9 * b^-8 = b^1 = b

## Answer this Question

## Related Questions

- Math - How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of...
- Math - I missied school Friday and am not sure how to do my math homework. here ...
- accouting - The ledger of Custer Company has the following work in process ...
- math - i was doing the mean theorem for this problem: (x+4)^2 (x-3) on [-4,3] i ...
- math 012 please help explain - can someone please help explain how to do this ...
- algebra1 - could you walk-through the steps to solving this problem because I am...
- math - i don't know how to work these problems out so i'll just pick a random ...
- Math Fractions - Posted by Mary Mac on Friday, May 9, 2008 at 10:01am. I have ...
- Alegbra - Show that the distance between the points (x,y) and the line Ax + By...
- math,beginning algebra - can someone help me work this problem out. If a total ...