va rog repede
dau coroana

Răspuns:
a) (3-1/3)×(9/8)²
=(9/3-1/3)×81/64
=8/3×81/64
=1/1×27/8
=27/8
b) 3/4 ÷ (3/4-1/2) - 4/9
=3/4÷(3/4-2/4)-4/9
=3/4÷1/4-4/9
=3/4×4/1-4/9
=3/1-4/9
=27/9-4/9
=23/9
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