simplify : (8^0+5^-1)^-2 × 3^2
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( 8⁰ + 5^ - 1 ) ^ - 2 × 3²
( 1 + 5 ^ - 1 ) ^ - 2 × 3²
( 1 + 1 / 5 ) ^ - 2 × 3²
( 6 / 5 ) ^ - 2 × 3²
25 / 36 × 3²
25 / 36 × 9
25 / 4
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