Question 130502:  (-y^-4)^2 / 6(y^-5)^-1 
simplify expression with positive exponents only 
 Answer by cngriffith(27)      (Show Source): 
You can  put this solution on YOUR website! (-y)^-8/6(y)^5      To raise a power to a power ---Multiply exponents. If you  
                    do not see exponent, it is one. 
1/6y^5(-y^8)        Move the term in the numerator with the negative exponent 
                    to the denominator.   Changing sides of the fraction line 
                    changes the sign of the exponent. 
1/-6y^13            Multiply the coefficients of the variables first. 
                    Then multiply the y terms together.   Remember,to  
                    multiply like bases, you add the exponents. 
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