9 ³/² - 3 (7)⁰ - (81) ½ simplify
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9 ³/² - 3 (7)⁰ - (81) ½
= (3²)³/² - 3(1) - (9²) ½
= 3³ - 3 - 9
= 27-3-9
= 27- 12 = 15
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