Laws of Exponents in Problem Solving

armando.valdez

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Apr 7, 2008
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prove that (27x^-2)(y6)/(3x^5)(y2)(z^0)=9y^4/x^7
 

royhaas

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Dec 14, 2005
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First, perform the arithmetic on the numbers. Then add the exponents for y algebraically. Now do the same for the exponents for x.
 

stapel

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armando.valdez said:
prove that (27x^-2)(y6)/(3x^5)(y2)(z^0)=9y^4/x^7
One usually just simplifies to find the answer, by merely applying exponent rules, but this exercise specifies that you are supposed to "prove" the equality. Are you supposed to do a formal proof, justifying each step with the names of various field properties...? :shock:

Please reply with clarification, including a clear listing of what you have tried so far. Thank you! :D

Eliz.
 
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