bantu jawab dan jelaskan semuanya juga ya

<p>2. a) 1/27 = 1/3³ = 3^-3</p><p>&nbsp; &nbsp; &nbsp;b) ⁵√7² = 7^2/5&nbsp;</p><p>3. &nbsp;a) (a⁵ : a²)⁷ = (a^5-2)⁷= (a³)⁷ = a^3×7= a²¹</p><p>&nbsp; &nbsp; &nbsp; b) (a^-3× b²)⁵ = (1/a³× b²)⁵= (b²/a³)⁵ = (b^2×5/a^3×5)</p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;= b¹⁰/a¹⁵</p><p>4. ⁷log 1/49 = ⁷log 1/7² = ⁷log 7^-2&nbsp;</p>