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22-09-2021
Mathematics

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simplify each expression for x=4
-5x^-4
7x^-3

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nouser69 nouser69

22-09-2021

-5x^-4
-5/x^4
Substitute x=4 into the eqn,
-5/(4)^4
-5/256

7x^-3
7/x^3
Substitute x=4 into the eqn,
7/(4)^3
7/64

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