How des one simplify this?

(2ab)^-2/2(ab)^3

I am unsure if this correct,

I removed the brackets

-4a^-2b^-2/2a^-3b^-3

to make exponents positive i moved to the top

-4a^-2--3b^-2--3 +2

which is -4ab+2

Is this correct?

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- July 17th 2010, 06:14 PMkiwisaSimplify with negetive exponents
How des one simplify this?

(2ab)^-2/2(ab)^3

I am unsure if this correct,

I removed the brackets

-4a^-2b^-2/2a^-3b^-3

to make exponents positive i moved to the top

-4a^-2--3b^-2--3 +2

which is -4ab+2

Is this correct? - July 17th 2010, 06:30 PMGusbob
- July 17th 2010, 06:43 PMkiwisa
sorry on i seei have atypo in the original post the exponent should be -3 so it should read as such

(2ab)^-2/2(ab)^-3

But with the equation at the top where does the 2^-1 come from if it was 2^3? The rest i can understand.

Sorry for the typo. - July 17th 2010, 07:01 PMGusbob
- July 17th 2010, 07:10 PMkiwisa
Thanks - so to multiply the bottom instead of dividing it I put it all in brackets and multply by -1. The rest i understand.

- July 17th 2010, 08:11 PMSoroban
Hello, kiwisa!

Quote:

Simplify: .

We have: .

Use the exponent rules: when dividing, subtract exponents.

And we have: .

. . . . . . . .

. . . . . . . .

. . . . . . . .

- July 17th 2010, 08:21 PMkiwisa
Thanks guys got it now (Rock)