algebra

***show work

evaluate the expression:
7^-6 (-6)^-9

simplify the expression. write your answer using only positive exponents.
4x^-2*-x -2a^0*a^2

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  1. Simplify this expression. If the answer contains exponents, all exponents should be positive.
    t 9 (t 6 ) 4

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  2. 9x^0y^-3

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