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Sum
Evaluate:
`[(-3/4)^-2]^2`
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Solution
`[(-3/4)^-2]^2=(-3/4)^(-2xx2)=(-3/4)^-4`
=`(4/3)^4=(4xx4xx4xx4)/(3xx3xx3xx3`
=`256/81=3 13/81`
Concept: Concept of Exponents
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