Math help! one expression left! i swear! please help?

0 ⤊

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

thanks in advance! i tried everything and i still didn't get it!

2007-09-02 10:10:15 · 4 answers · asked by ggh 1 in Science & Mathematics ➔ Mathematics

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

(3a)^2 = 3^2 a^2 = 9a^2

b^-3 = 1/b^3

1/b^-2 = b^2

9a^2b^2/b^3

9a^2/b

2007-09-02 10:17:34 · answer #1 · answered by Anonymous · 0⤊ 0⤋

No need to swear...

Numerator= 9a^2/b^3

Denominator= 1/b^2

Expression = 9a^2 b^2/b^3

= 9a^2/b

and that's how is done. Good luck!

2007-09-02 17:18:16 · answer #2 · answered by alrivera_1 4 · 0⤊ 0⤋

(3a)^2b^-3
~~~~~~~~~ = 3a^2/b
b^-2

2007-09-02 17:18:37 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋

(3a^2)/(b)

2007-09-02 17:15:26 · answer #4 · answered by de4th 4 · 0⤊ 0⤋