Tolong hitungkan besok dikumpul 1. 3^4 : 3^7=...? 2. (2/3)^3×(2/3)^4=...?

[tex]1.) \\ 3 {}^{4} \div 3 {}^{7} \\ = 3 {}^{4 - 7} \\ = 3 {}^{ - 3} \\ = \frac{1}{3 {}^{3} } \\ = \frac{1}{9} \\ \\ 2.) \\( \frac{2}{3} ) {}^{3} \times (\frac{2}{3} ) {}^{4} \\ = (\frac{2}{3} ) {}^{3 + 4} \\ = ( \frac{2}{3} ) {}^{7} \\ = \frac{2 {}^{7} }{3 {}^{7} } \\ = \frac{128}{2187} [/tex]