tolong untuk yang bisa

<p><strong>Pembahasan</strong></p><p>Untuk memudahkan, hitung masing2 pembilang dan penyebutnya sbb:</p><p>&nbsp;</p><p><i><u>Pembilang</u></i></p><p>81⁠⁠⁠⁠⁠⁠⁠^½- 81^-½= (9²)^½⁠⁠⁠⁠⁠⁠ - (9²)^-½</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= &nbsp;9 - 1/9&nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= &nbsp;80/9</p><p>&nbsp;</p><p><i><u>Penyebut</u></i></p><p>81⁠⁠⁠⁠⁠⁠⁠^¼+ 81^-¼= (3⁴)^¼ + (3⁴)^-¼</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 3 + ⅓ &nbsp;</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= 10/3</p><p>&nbsp;</p><p>(80/9)/(10/3) = 8/3</p><p>&nbsp;</p><p>Jawaban &nbsp;<strong>8/3</strong></p>