(2 power-1 ÷ 5power-1)power-2 × (-5/8) power -2
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━━━━━━━━━━━━━━━━━━━━━━━━━
━━━━━━━━━━━━━━━━━━━━━━━━━
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Step-by-step explanation:
2━━━━━━━━━━━━━━━━━━━━━━━━━
[2-¹ ÷ 5-¹ )-² * ( -5/8 )-²
1/2 ÷ 1/5 )- * ( -8/5 )²
5/2 )- * 64
256/625
( 16/25 )²
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