SOLUTION: Been trying this for a while. Simplify and evaluate. (x^7y^-4z^0/5^-2x^3y^-8z^-9)^2

Algebra ->  Expressions-with-variables -> SOLUTION: Been trying this for a while. Simplify and evaluate. (x^7y^-4z^0/5^-2x^3y^-8z^-9)^2      Log On


   

Question 82365: Been trying this for a while.
Simplify and evaluate.
(x^7y^-4z^0/5^-2x^3y^-8z^-9)^2
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
%28%28x%5E7y%5E-4z%5E0%29%2F%285%5E-2x%5E3y%5E-8z%5E-9%29%29%5E2
:
Any number with a 0 exponent is 1, so we have:
%28%28x%5E7y%5E-4%29%2F%285%5E-2x%5E3y%5E-8z%5E-9%29%29%5E2
:
Combine like terms in the numerator, follow the rules of exponents:
%285%5E2x%5E%28%287-3%29%29y%5E%28%28-4%2B8%29%29z%5E9%29%5E2
:
%2825x%5E4y%5E4z%5E9%29%5E2
:
Square each term:
625%2Ax%5E8y%5E8z%5E18
:
I have confidence in the method, however, a lot of chance for error here.
I advise you to do it yourself to confirm my solution