Răspuns:
[tex]a)(3 - \frac{1}{3} ) \times ( \frac{9}{8} ) {}^{2} = \\ ( \frac{9 - 1}{3} ) \times ( \frac{9}{8} ) {}^{2} = \\ \frac{8 {}^{(8} }{3 {}^{(3} } {}^{} \times \frac{81 {}^{(3} }{64 {}^{(8} } = 1 \times \frac{27 }{8 } = \frac{27}{8} \\ \\ b) \frac{3}{4} \div ( \frac{3}{4} - \frac{1}{2} ) - \frac{4}{9} = \\ \frac{3}{4} \div ( \frac{3 - 2}{4} ) - \frac{4}{9} = \\ \frac{3}{4} \div \frac{1}{4} - \frac{4}{9}= \\ \frac{3}{4 {}^{(4} } \times 4 {}^{(4} - \frac{4}{9} = \\ 3 - \frac{4}{9} = \frac{27 - 4}{9} = \frac{23}{9} [/tex]
sper că te-am ajutat
