Sorry its late but i just got off work

I need help with some of my problems, Im not sure I did these right

(^ means its an exponent)

(a^3b^3) (ab)^-2

-5x^3 y^3 z^4 over 20x^3 y^7 z^4

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- October 25th 2006, 09:56 PMwpcp15Help Please algebra exponents
Sorry its late but i just got off work

I need help with some of my problems, Im not sure I did these right

(^ means its an exponent)

(a^3b^3) (ab)^-2

-5x^3 y^3 z^4 over 20x^3 y^7 z^4 - October 25th 2006, 10:11 PMCaptainBlack
- October 25th 2006, 10:19 PMwpcp15
Thanx, I started that way but i made a different turn