SOLUTION: 29. evaluate. y2 - 7, when y = -10 48. Express using posotive exponents. then simplify. 1/h power of -n 89. divide and simplify. (8x)4/(8x)10 98. x to the power of -9/x

Algebra ->  Algebra  -> Exponents -> SOLUTION: 29. evaluate. y2 - 7, when y = -10 48. Express using posotive exponents. then simplify. 1/h power of -n 89. divide and simplify. (8x)4/(8x)10 98. x to the power of -9/x      Log On

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Question 57052: 29. evaluate.
y2 - 7, when y = -10
48. Express using posotive exponents. then simplify.
1/h power of -n
89. divide and simplify.
(8x)4/(8x)10
98. x to the power of -9/x to the power of -3
Answer by funmath(2925) About Me  (Show Source):
You can put this solution on YOUR website!
I am having a difficult time understanding what you mean. We usually use ^ to indicate raising something to a power. a^m=a%5Em. If I didn't interpret your problems correctly, let me know.
:
The rules that we are going to use are:
highlight%28a%5E%28-m%29=1%2Fa%5Em%29
highlight%281%2F%28a%5E%28-m%29%29=a%5Em%29
highlight%28%28a%5Em%2Ab%5En%29%5Et=a%5E%28mt%29%2Ab%5E%28nt%29%29
highlight%28a%5Em%2Fa%5En=a%5E%28m-n%29=1%2Fa%5E%28n-m%29%29
highlight%28a%5Em%2Fb%5En%29%5E%28-t%29=%28b%5En%2Fa%5Em%29%5Et%29
Keep in mind that denominators cannot equal 0, so there are somre restricitons to these rules.
:
29. evaluate.
y%5E2-7, when y = -10
%28-10%29%5E2-7
%28-10%29%28-10%29-7
100-7
highlight%2893%29
:
48. Express using posotive exponents. then simplify.
%281%2Fh%29%5E%28-n%29
%28h%2F1%29%5En
highlight%28h%5En%29
:
89. divide and simplify.
%288x%29%5E4%2F%288x%29%5E10
1%2F%288x%29%5E%2810-4%29
1%2F%288x%29%5E6
1%2F%288%5E6x%5E6%29
highlight%281%2F262144x%5E6%29
:
98. x%5E%28-9%29%2F%28x%5E%28-3%29%29
x%5E3%2Fx%5E9
1%2F%28x%5E%289-3%29%29
highlight%281%2Fx%5E6%29
:
Happy Calculating!!!