SOLUTION: Simplify and write with positive exponents: 7yx^-5 ______ 28y^-5 Simplify and write with positive exponents x^-4 y^5 ________ z^-1 Evaluate (1/3)^2 + 1/4

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Question 153228This question is from textbook elementary and intermediate algebra
: Simplify and write with positive exponents:
7yx^-5
______
28y^-5


Simplify and write with positive exponents
x^-4 y^5
________
z^-1

Evaluate (1/3)^2 + 1/4 -(4/3)^2 * (1/2)^3

Evaluate 2*(5 - 3)^3 + 8 ÷ 2 + (9 - 4)^2

Evaluate {3(7 - 9) + 16}^3 ÷ (-5) - 2^4

Thanks everyone for your help. :) This question is from textbook elementary and intermediate algebra

Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!
# 1



Start with the given expression.


Divide the coefficients and to get


When you divide monomials, simply subtract the exponents.


Subtract.


Rewrite as


Combine the fractions.


So where or






# 2

Note: and


So where and






# 3



So





# 4




So




# 5



So
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