- #1
Nelo
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Homework Statement
http://i51.tinypic.com/2zyfyaa.jpg
Question 3 l )
Homework Equations
The Attempt at a Solution
(6a^-2b^-3)^2
(__________) 1/6a^2 * 1/b^3 / 1/2a^2 * 1/b^1
(2a^2b^-1 )
I multiplied the top half together to give me 1/ 36a^4b^2
Multiplied the bottom half to give me 1/4a^4b^1 , Then took the reciprical of the bottom half and move it up and multiplied it with the top half.
Giving me a final of
:: 4a^4b^1
__________
36^a4b^5
However, when i fold this down it becomes 1/9 and the a's cancel and 4b is left over at the bottom.
The answer is a^8b^4 / 9
I know its complicated to read, just write it on paper and ull understand.
What did i do wrong?